Exception mapper as provider
Add Feed builder and test utils
Add test jar plugin and use in shared
Support Postgres database

1. Updated spring configuration, flyway configuration, Maven configuration
2. JDBC drivers for postgres
Merge remote-tracking branch 'origin/master'
Merge pull request #1 from divyakumarjain/master

Support Postgres
Merge branch 'master' of https://github.com/sveluri/gal-super-api into feed-builder
Add name space to super api model classes
Removing spring profile active. Child vertical need to enable as per DB
Common classes related to feed