Calculate default security group into quota usage

Create the related quota usage when creating the default
security group for user.

Change-Id: Ide1de160814a5937f71e07f3ab10ce2bba8886f1
Closes-bug: 1271381
Convert remove_fixed_ip_to_instance to objects

Related to blueprint icehouse-objects.
Related to blueprint compute-manager-objects.

Change-Id: I443784d95cf0556dc4e6f9ac7f91466c766819b6
Convert post_live_migration_at_destination to objects

Related to blueprint icehouse-objects.
Related to blueprint compute-manager-objects.

Change-Id: Icaf0346c852d2f6a804675c975e54a7df642c1ab
Correct the assert() order in test_libvirt_blockinfo

I'm not a big believer in changing the order of assert arguments
for the fun of it. On the other hand, this file was inconsistent
(and mostly backwards). I just wasted a while trying to figure out
what was wrong with my code to discover it was the arguments being
passed in the wrong order. So I am fixing that.

Change-Id: If5cb6c12a26fedbcd1f15c2a3f310e7c8347b586
Merge "Convert remove_fixed_ip_to_instance to objects"
Merge "Convert post_live_migration_at_destination to objects"
Merge "Calculate default security group into quota usage"
Merge "Correct the assert() order in test_libvirt_blockinfo"