.travis.yml: try to fix issue with update to postgresql 9.4

git-svn-id: https://svn.osgeo.org/gdal/trunk@28247 f0d54148-0727-0410-94bb-9a71ac55c965
.travis.yml: try to fix authentication

git-svn-id: https://svn.osgeo.org/gdal/trunk@28248 f0d54148-0727-0410-94bb-9a71ac55c965
.travis.yml: try to fix authentication

git-svn-id: https://svn.osgeo.org/gdal/trunk@28249 f0d54148-0727-0410-94bb-9a71ac55c965
.travis.yml: try to fix authentication

git-svn-id: https://svn.osgeo.org/gdal/trunk@28250 f0d54148-0727-0410-94bb-9a71ac55c965
.travis.yml: try to go back to postgresql 9.1 again

git-svn-id: https://svn.osgeo.org/gdal/trunk@28251 f0d54148-0727-0410-94bb-9a71ac55c965
.travis.yml: try to go back to postgresql 9.1 again

git-svn-id: https://svn.osgeo.org/gdal/trunk@28252 f0d54148-0727-0410-94bb-9a71ac55c965
.travis.yml: try to go back to postgresql 9.1 again

git-svn-id: https://svn.osgeo.org/gdal/trunk@28253 f0d54148-0727-0410-94bb-9a71ac55c965
.travis.yml: try to go back to postgresql 9.1 again

git-svn-id: https://svn.osgeo.org/gdal/trunk@28254 f0d54148-0727-0410-94bb-9a71ac55c965
.travis.yml: try to go back to postgresql 9.1 again

git-svn-id: https://svn.osgeo.org/gdal/trunk@28255 f0d54148-0727-0410-94bb-9a71ac55c965
.travis.yml: try to go back to postgresql 9.1 again

git-svn-id: https://svn.osgeo.org/gdal/trunk@28256 f0d54148-0727-0410-94bb-9a71ac55c965
Merge branch 'trunk' into trunk_with_coverage