Sync gettextutils from Oslo
Sync gettextutils from Oslo

Latest oslo-incubator gettextutils commit:
9d529dd Make Message keep string interpolation args

Bring in latest fixes to the new Message class.

bp i18n-messages

Change-Id: I9ac8a0da9ea3b7b393f81c255332d83bbcab1da9
isyippee/ceilometer,Juniper/ceilometer,ityaptin/ceilometer,r-mibu/ceilometer,cernops/ceilometer,Juniper/ceilometer,chungg/aodh,luogangyi/Ceilometer-oVirt,NeCTAR-RC/ceilometer,tanglei528/ceilometer,mathslinux/ceilometer,openstack/ceilometer,cernops/ceilometer,ityaptin/ceilometer,sileht/aodh,pkilambi/ceilometer,r-mibu/ceilometer,idegtiarov/ceilometer,mathslinux/ceilometer,pkilambi/ceilometer,pczerkas/aodh,m1093782566/openstack_org_ceilometer,NeCTAR-RC/ceilometer,pczerkas/aodh,MisterPup/Ceilometer-Juno-Extension,isyippee/ceilometer,luogangyi/Ceilometer-oVirt,m1093782566/openstack_org_ceilometer,maestro-hybrid-cloud/ceilometer,eayunstack/ceilometer,fabian4/ceilometer,openstack/aodh,MisterPup/Ceilometer-Juno-Extension,froyobin/ceilometer,redhat-openstack/ceilometer,maestro-hybrid-cloud/ceilometer,openstack/ceilometer,tanglei528/ceilometer,openstack/aodh,NeCTAR-RC/ceilometer,idegtiarov/ceilometer,fabian4/ceilometer,sileht/aodh,tanglei528/ceilometer,chungg/aodh,eayunstack/ceilometer,froyobin/ceilometer,redhat-openstack/ceilometer