* #50877:
* add support to postgresql_privs to use "FOR { ROLE | USER } target_role"
in "ALTER DEFAULT PRIVILEGES"
* fix sanity errors
* #50877: fix documentation and add a check for correct usage
of target_roles
* #50877: fix missing absent option for default privs with target_role
* #50877: add clear description, when target_roles can be used
* #50877: fix conflicts, formatting, and add a changelog fragment
* #50877: fix sanity error E335
* #50877: swap conditions and fix error to warning msg
* #50877: add tests for default privileges
* #50877: fix tests for default privileges
* #50877: fix tests for default privileges on centos 6
