xml: output memory unit for clarity

Make it obvious to 'dumpxml' readers what unit we are using,
since our default of KiB for memory (1024) differs from qemu's
default of MiB; and differs from our use of bytes for storage.

Tests were updated via:

$ find tests/*data tests/*out -name '*.xml' | \
  xargs sed -i 's/<\(memory\|currentMemory\|hard_limit\|soft_limit\|min_guarantee\|swap_hard_limit\)>/<\1 unit='"'KiB'>/"
$ find tests/*data tests/*out -name '*.xml' | \
  xargs sed -i 's/<\(capacity\|allocation\|available\)>/<\1 unit='"'bytes'>/"

followed by a few fixes for the stragglers.

Note that with this patch, the RNG for <memory> still forbids
validation of anything except unit='KiB', since the code silently
ignores the attribute; a later patch will expand <memory> to allow
scaled input in the code and update the RNG to match.

* docs/schemas/basictypes.rng (unit): Add 'bytes'.
(scaledInteger): New define.
* docs/schemas/storagevol.rng (sizing): Use it.
* docs/schemas/storagepool.rng (sizing): Likewise.
* docs/schemas/domaincommon.rng (memoryKBElement): New define; use
for memory elements.
* src/conf/storage_conf.c (virStoragePoolDefFormat)
(virStorageVolDefFormat): Likewise.
* src/conf/domain_conf.h (_virDomainDef): Document unit used
internally.
* src/conf/storage_conf.h (_virStoragePoolDef, _virStorageVolDef):
Likewise.
* tests/*data/*.xml: Update all tests.
* tests/*out/*.xml: Likewise.
* tests/define-dev-segfault: Likewise.
* tests/openvzutilstest.c (testReadNetworkConf): Likewise.
* tests/qemuargv2xmltest.c (blankProblemElements): Likewise.

tests/storagepoolxml2xmlout/pool-dir.xml

@@ -1,9 +1,9 @@
 <pool type='dir'>
   <name>virtimages</name>
   <uuid>70a7eb15-6c34-ee9c-bf57-69e8e5ff3fb2</uuid>
-  <capacity>0</capacity>
-  <allocation>0</allocation>
-  <available>0</available>
+  <capacity unit='bytes'>0</capacity>
+  <allocation unit='bytes'>0</allocation>
+  <available unit='bytes'>0</available>
   <source>
   </source>
   <target>

tests/storagepoolxml2xmlout/pool-disk.xml

@@ -1,9 +1,9 @@
 <pool type='disk'>
   <name>sda</name>
   <uuid>e3509a62-1b4c-e20b-94bd-9168963f9b97</uuid>
-  <capacity>0</capacity>
-  <allocation>0</allocation>
-  <available>0</available>
+  <capacity unit='bytes'>0</capacity>
+  <allocation unit='bytes'>0</allocation>
+  <available unit='bytes'>0</available>
   <source>
     <device path='/dev/sda'/>
     <format type='dos'/>

tests/storagepoolxml2xmlout/pool-fs.xml

@@ -1,9 +1,9 @@
 <pool type='fs'>
   <name>images</name>
   <uuid>7641d5a8-af11-f730-a34e-0a7dfcede71f</uuid>
-  <capacity>0</capacity>
-  <allocation>0</allocation>
-  <available>0</available>
+  <capacity unit='bytes'>0</capacity>
+  <allocation unit='bytes'>0</allocation>
+  <available unit='bytes'>0</available>
   <source>
     <device path='/dev/sda6'/>
     <format type='ext3'/>

tests/storagepoolxml2xmlout/pool-iscsi-auth.xml

@@ -1,9 +1,9 @@
 <pool type='iscsi'>
   <name>virtimages</name>
   <uuid>e9392370-2917-565e-692b-d057f46512d6</uuid>
-  <capacity>0</capacity>
-  <allocation>0</allocation>
-  <available>0</available>
+  <capacity unit='bytes'>0</capacity>
+  <allocation unit='bytes'>0</allocation>
+  <available unit='bytes'>0</available>
   <source>
     <host name='iscsi.example.com'/>
     <device path='demo-target'/>

tests/storagepoolxml2xmlout/pool-iscsi-multiiqn.xml

@@ -1,9 +1,9 @@
 <pool type='iscsi'>
   <name>multiiqn</name>
   <uuid>e9392370-2917-565e-792c-e057f46512d7</uuid>
-  <capacity>0</capacity>
-  <allocation>0</allocation>
-  <available>0</available>
+  <capacity unit='bytes'>0</capacity>
+  <allocation unit='bytes'>0</allocation>
+  <available unit='bytes'>0</available>
   <source>
     <host name='iscsi.example.com'/>
     <device path='demo-target'/>

tests/storagepoolxml2xmlout/pool-iscsi-vendor-product.xml

@@ -1,9 +1,9 @@
 <pool type='iscsi'>
   <name>virtimages</name>
   <uuid>e9392370-2917-565e-692b-d057f46512d6</uuid>
-  <capacity>0</capacity>
-  <allocation>0</allocation>
-  <available>0</available>
+  <capacity unit='bytes'>0</capacity>
+  <allocation unit='bytes'>0</allocation>
+  <available unit='bytes'>0</available>
   <source>
     <host name='iscsi.example.com'/>
     <device path='demo-target'/>

tests/storagepoolxml2xmlout/pool-iscsi.xml

@@ -1,9 +1,9 @@
 <pool type='iscsi'>
   <name>virtimages</name>
   <uuid>e9392370-2917-565e-692b-d057f46512d6</uuid>
-  <capacity>0</capacity>
-  <allocation>0</allocation>
-  <available>0</available>
+  <capacity unit='bytes'>0</capacity>
+  <allocation unit='bytes'>0</allocation>
+  <available unit='bytes'>0</available>
   <source>
     <host name='iscsi.example.com'/>
     <device path='demo-target'/>

tests/storagepoolxml2xmlout/pool-logical-create.xml

@@ -1,9 +1,9 @@
 <pool type='logical'>
   <name>HostVG</name>
   <uuid>1c13165a-d0f4-3aee-b447-30fb38789091</uuid>
-  <capacity>0</capacity>
-  <allocation>0</allocation>
-  <available>0</available>
+  <capacity unit='bytes'>0</capacity>
+  <allocation unit='bytes'>0</allocation>
+  <available unit='bytes'>0</available>
   <source>
     <device path='/dev/sdb1'/>
     <device path='/dev/sdb2'/>

tests/storagepoolxml2xmlout/pool-logical.xml

@@ -1,9 +1,9 @@
 <pool type='logical'>
   <name>HostVG</name>
   <uuid>1c13165a-d0f4-3aee-b447-30fb38789091</uuid>
-  <capacity>0</capacity>
-  <allocation>0</allocation>
-  <available>0</available>
+  <capacity unit='bytes'>0</capacity>
+  <allocation unit='bytes'>0</allocation>
+  <available unit='bytes'>0</available>
   <source>
     <name>HostVG</name>
     <format type='lvm2'/>

tests/storagepoolxml2xmlout/pool-mpath.xml

@@ -1,9 +1,9 @@
 <pool type='mpath'>
   <name>mpath</name>
   <uuid>e9392370-2917-565e-692b-d057f46512d6</uuid>
-  <capacity>0</capacity>
-  <allocation>0</allocation>
-  <available>0</available>
+  <capacity unit='bytes'>0</capacity>
+  <allocation unit='bytes'>0</allocation>
+  <available unit='bytes'>0</available>
   <source>
   </source>
   <target>

tests/storagepoolxml2xmlout/pool-netfs.xml

@@ -1,9 +1,9 @@
 <pool type='netfs'>
   <name>nfsimages</name>
   <uuid>7641d5a8-af11-f730-a34e-0a7dfcede71f</uuid>
-  <capacity>0</capacity>
-  <allocation>0</allocation>
-  <available>0</available>
+  <capacity unit='bytes'>0</capacity>
+  <allocation unit='bytes'>0</allocation>
+  <available unit='bytes'>0</available>
   <source>
     <host name='localhost'/>
     <dir path='/var/lib/libvirt/images'/>

tests/storagepoolxml2xmlout/pool-scsi.xml

@@ -1,9 +1,9 @@
 <pool type='scsi'>
   <name>hba0</name>
   <uuid>e9392370-2917-565e-692b-d057f46512d6</uuid>
-  <capacity>0</capacity>
-  <allocation>0</allocation>
-  <available>0</available>
+  <capacity unit='bytes'>0</capacity>
+  <allocation unit='bytes'>0</allocation>
+  <available unit='bytes'>0</available>
   <source>
     <adapter name='host0'/>
   </source>