qemu: block: Implement readahead and timeout properties for 'curl' driver

Pass in the correct fields.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>

tests/qemuxml2argvdata/disk-network-http.x86_64-latest.args

@@ -29,13 +29,15 @@ file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
 -boot strict=on \
 -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 \
 -blockdev '{"driver":"http","url":"http://example.org:80/test.img",\
-"node-name":"libvirt-4-storage","auto-read-only":true,"discard":"unmap"}' \
+"timeout":1234,"node-name":"libvirt-4-storage","auto-read-only":true,\
+"discard":"unmap"}' \
 -blockdev '{"node-name":"libvirt-4-format","read-only":false,"driver":"raw",\
 "file":"libvirt-4-storage"}' \
 -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x2,drive=libvirt-4-format,\
 id=virtio-disk0,bootindex=1 \
 -blockdev '{"driver":"https","url":"https://example.org:443/test2.img",\
-"node-name":"libvirt-3-storage","auto-read-only":true,"discard":"unmap"}' \
+"readahead":1024,"node-name":"libvirt-3-storage","auto-read-only":true,\
+"discard":"unmap"}' \
 -blockdev '{"node-name":"libvirt-3-format","read-only":false,"driver":"raw",\
 "file":"libvirt-3-storage"}' \
 -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x3,drive=libvirt-3-format,\

tests/qemuxml2argvdata/disk-network-http.xml

@@ -17,6 +17,7 @@
       <driver name='qemu' type='raw'/>
       <source protocol='http' name='test.img'>
         <host name='example.org'/>
+        <timeout seconds='1234'/>
       </source>
       <target dev='vda' bus='virtio'/>
     </disk>
@@ -24,6 +25,7 @@
       <driver name='qemu' type='raw'/>
       <source protocol='https' name='test2.img'>
         <host name='example.org'/>
+        <readahead size='1024'/>
       </source>
       <target dev='vdb' bus='virtio'/>
     </disk>