Update analyze_opts to work with new nova.conf sample format

analyze_opts is a tool to help clean out a nova.conf file by checking
for unused and default values set in your nova.conf

Change-Id: I01fff134f8906bff929c55bea8c152653d3e9760
Merge "Update analyze_opts to work with new nova.conf sample format"
Merge remote-tracking branch 'm_src_repo/citrix-fixes' into build-temp