travis-ci: Add "postgresql" database.
travis-ci: Add "postgresql" database.

matthewkmayer/calagator,oktober/calagator,oktober/calagator,cp/calagator-1,cp/calagator-1,Villag/dentonator,kerrizor/calagator,bencornelis/calagator,nblackburn87/calagator,eeeeeean/windchimes,nblackburn87/calagator,shawnacscott/calagator,shawnacscott/calagator,jmcduffie32/calagator,L2-D2/calagator,alexbeeken/calagator.org,VolunteerOdyssey/calagator,reidab/calagator,bencornelis/calagator,iamBalaji/Calagator,cp/calagator-1,shawnacscott/calagator,CorainChicago/ActivateHub,VolunteerOdyssey/calagator,dudleysr/calagator-workspace,oktober/calagator,VolunteerOdyssey/calagator,Villag/dentonator,L2-D2/calagator,eeeeeean/windchimes,L2-D2/calagator,L2-D2/calagator,kerrizor/calagator,oktober/calagator,matthewkmayer/calagator,iamBalaji/Calagator,reidab/calagator,matthewkmayer/calagator,Eugator-Wranglers/calagator,kerrizor/calagator,bencornelis/calagator,reidab/calagator,alexbeeken/calagator.org,iamBalaji/Calagator,reidab/calagator,CorainChicago/ActivateHub,Eugator-Wranglers/calagator,shawnacscott/calagator,jmcduffie32/calagator,iamBalaji/Calagator,dudleysr/calagator-workspace,cp/calagator-1,bencornelis/calagator,CorainChicago/ActivateHub,Villag/dentonator,jmcduffie32/calagator,nblackburn87/calagator,matthewkmayer/calagator,kerrizor/calagator,jmcduffie32/calagator,CorainChicago/ActivateHub