Create psql test role if not exists in Vagrant
Create psql test role if not exists in Vagrant

Fixes Bug #1038956

yglazko/socorro,cliqz/socorro,lonnen/socorro,Tchanders/socorro,spthaolt/socorro,pcabido/socorro,cliqz/socorro,mozilla/socorro,cliqz/socorro,KaiRo-at/socorro,yglazko/socorro,lonnen/socorro,pcabido/socorro,rhelmer/socorro,cliqz/socorro,rhelmer/socorro,yglazko/socorro,spthaolt/socorro,luser/socorro,AdrianGaudebert/socorro,Tayamarn/socorro,rhelmer/socorro,Serg09/socorro,rhelmer/socorro,Tayamarn/socorro,luser/socorro,m8ttyB/socorro,luser/socorro,twobraids/socorro,linearregression/socorro,adngdb/socorro,mozilla/socorro,linearregression/socorro,Tchanders/socorro,m8ttyB/socorro,AdrianGaudebert/socorro,yglazko/socorro,KaiRo-at/socorro,Serg09/socorro,adngdb/socorro,twobraids/socorro,rhelmer/socorro,luser/socorro,Serg09/socorro,KaiRo-at/socorro,twobraids/socorro,cliqz/socorro,AdrianGaudebert/socorro,m8ttyB/socorro,Tayamarn/socorro,linearregression/socorro,m8ttyB/socorro,linearregression/socorro,Tayamarn/socorro,adngdb/socorro,mozilla/socorro,m8ttyB/socorro,m8ttyB/socorro,linearregression/socorro,luser/socorro,luser/socorro,twobraids/socorro,pcabido/socorro,yglazko/socorro,Tchanders/socorro,mozilla/socorro,spthaolt/socorro,Serg09/socorro,spthaolt/socorro,Tchanders/socorro,Tayamarn/socorro,Serg09/socorro,spthaolt/socorro,pcabido/socorro,KaiRo-at/socorro,pcabido/socorro,adngdb/socorro,lonnen/socorro,adngdb/socorro,AdrianGaudebert/socorro,KaiRo-at/socorro,mozilla/socorro,pcabido/socorro,linearregression/socorro,twobraids/socorro,AdrianGaudebert/socorro,Serg09/socorro,yglazko/socorro,spthaolt/socorro,Tayamarn/socorro,mozilla/socorro,rhelmer/socorro,Tchanders/socorro,cliqz/socorro,lonnen/socorro,Tchanders/socorro,AdrianGaudebert/socorro,twobraids/socorro,adngdb/socorro,KaiRo-at/socorro