Sanitize language settings
Sanitize language settings

To avoid commands bailing out with "unsupported locale setting" errors.

Change-Id: I54ae4cd84a0a4b4875533181b1d96563a1604775

Mahito/devstack,mmasaki/devstack,parul24/devstack,sc68cal/devstack,innodee/openstackk,kplus/devstack-moonshot,Mahito/devstack,ozamiatin/devstack,wenhuizhang/devstack,bljgaurav/openstack-test,andrewrothstein/devstack,CloudServer/devstack,eharney/devstack,HPCHub/devstack,bigswitch/devstack,noironetworks/devstack,bswartz/devstack,rushiagr/devstack,bljgaurav/openstack-test,bigswitch/devstack,liuquansheng47/devstack,bq-xiao/devstack,williamthegrey/devstack,sequenceiq/devstack,nuxeh/devstack,costingalan/devstack,group-policy/devstack,wenhuizhang/devstack,dtroyer/devstack,thomasem/devstack,dirkmueller/devstack,CloudServer/devstack,virtualopensystems/devstack,promptworks/devstack,flavio-fernandes/devstack,affo/devstack,avvocatodemarchis/devstack,noironetworks/devstack,NaokiMiyata/devstack,atulpatil301/devstack,openstack-dev/devstack,herrsechs/devstack,atulpatil301/devstack,pacinete/devstack,srics/devstack,j4/devstack,tianweizhang/devstack,ozamiatin/devstack,TwinkleChawla/devstack,vishnugonela/devstack,neerja28/Devstack_GlusterFS,tianweizhang/devstack,mssumanth/devstack,group-policy/devstack,BSJAIN92/OpenStack,prithivm/branch01,mc2014/devstack,dtroyer/devstack,mmasaki/devstack,pombredanne/devstack,varunarya10/devstack,dirkmueller/devstack,NaokiMiyata/devstack,nuxeh/devstack,j4/devstack,liuquansheng47/devstack,promptworks/devstack,sequenceiq/devstack,upadhyay-prashant/devstack,prithivm/branch01,JioCloud/devstack,mc2014/devstack,upadhyay-prashant/devstack,olivierlemasle/devstack,costingalan/devstack,parul24/devstack,HPCHub/devstack,mssumanth/devstack,Millnert/contrail-devstack,TwinkleChawla/devstack,bq-xiao/devstack,openstack-dev/devstack,andrewrothstein/devstack,richliu/devstack,eshnil2000/devstack,vsham20/devstack,herrsechs/devstack,pczerkas/devstack,kplus/devstack-moonshot,sc68cal/devstack,LoHChina/devstack,varunarya10/devstack,eharney/devstack,Juniper/devstack,nawawi/openstack,pacinete/devstack,avvocatodemarchis/devstack,flavio-fernandes/devstack,pombredanne/devstack,thomasem/devstack,pczerkas/devstack,bswartz/devstack,richliu/devstack,nawawi/openstack,BSJAIN92/OpenStack,samgoon/devstack,neerja28/Devstack_GlusterFS,jamielennox/devstack,rushiagr/devstack,vishnugonela/devstack,olivierlemasle/devstack,vsham20/devstack,affo/devstack,samgoon/devstack,LoHChina/devstack