Add a new user to run the framework code

Add the apache user the ipawebui group.
Make the ccaches directory owned by the ipawebui group and make
mod_auth_gssapi write the ccache files as r/w by the apache user and
the ipawebui group.
Fix tmpfiles creation ownership and permissions to allow the user to
access ccaches files.
The webui framework now works as a separate user than apache, so the certs
used to access the dogtag instance need to be usable by this new user as well.
Both apache and the webui user are in the ipawebui group, so use that.

https://fedorahosted.org/freeipa/ticket/5959

Signed-off-by: Simo Sorce <simo@redhat.com>
Reviewed-By: Jan Cholasta <jcholast@redhat.com>

install/oddjob/etc/dbus-1/system.d/oddjob-ipa-trust.conf

@@ -30,7 +30,7 @@
            send_member="Get"/>
   </policy>
 
-  <policy user="apache">
+  <policy user="ipaapi">
     <allow send_destination="com.redhat.idm.trust"
            send_path="/"
            send_interface="com.redhat.idm.trust"

install/oddjob/etc/dbus-1/system.d/org.freeipa.server.conf

@@ -10,7 +10,7 @@
     <allow send_destination="org.freeipa.server" send_interface="org.freeipa.server"/>
   </policy>
 
-  <policy user="apache">
+  <policy user="ipaapi">
     <allow send_destination="org.freeipa.server" send_interface="org.freeipa.server"/>
   </policy>
 

install/oddjob/etc/oddjobd.conf.d/ipa-server.conf

@@ -2,7 +2,7 @@
 <oddjobconfig>
   <service name="org.freeipa.server">
     <allow user="root"/>
-    <allow user="apache"/>
+    <allow user="ipaapi"/>
     <object name="/">
       <interface name="org.freeipa.server">
         <method name="conncheck">

install/oddjob/etc/oddjobd.conf.d/oddjobd-ipa-trust.conf

@@ -2,7 +2,7 @@
 <oddjobconfig>
   <service name="com.redhat.idm.trust">
     <allow user="root"/>
-    <allow user="apache"/>
+    <allow user="ipaapi"/>
     <object name="/">
       <interface name="org.freedesktop.DBus.Introspectable">
         <allow min_uid="0" max_uid="0"/>