pg_hba.aug: fix method to avoid clashing with hostname
pg_hba.aug: fix method to avoid clashing with hostname

jjlin/augeas,ptoscano/augeas,jtopjian/augeas,GeoffWilliams/augeas,kumy/augeas,jjlin/augeas,mlichvar/augeas,kumy/augeas,mchf/augeas,hercules-team/augeas-do-not-use,kumy/augeas,jjlin/augeas,jasperla/augeas,raphink/augeas,MikaelSmith/augeas,kunkku/augeas,mlichvar/augeas,ptoscano/augeas,pevalme/augeas,GeoffWilliams/augeas,lutter/augeas,lutter/augeas,dafugg/augeas,pevalme/augeas,mlichvar/augeas,manandbytes/augeas,raphink/augeas,dafugg/augeas,manandbytes/augeas,hercules-team/augeas,hercules-team/augeas,ptoscano/augeas,kunkku/augeas,dafugg/augeas,hercules-team/augeas-do-not-use,hercules-team/augeas-do-not-use,kumy/augeas,jtopjian/augeas,mchf/augeas,kunkku/augeas,MikaelSmith/augeas,pevalme/augeas,lutter/augeas,jasperla/augeas