Postgresql docs fragments 2 (#55363)

* Postgres to use docsfragments
* Postgres to use docsfragments: redefined options in postgresql_user

lib/ansible/modules/database/postgresql/postgresql_slot.py

@@ -67,18 +67,6 @@ options:
     type: str
     aliases:
     - login_db
-  port:
-    description:
-    - Database port to connect.
-    type: int
-    default: 5432
-    aliases:
-    - login_port
-  login_user:
-    description:
-    - User (role) used to authenticate with PostgreSQL.
-    type: str
-    default: postgres
   session_role:
     description:
     - Switch to session_role after connecting.
@@ -86,35 +74,6 @@ options:
     - Permissions checking for SQL commands is carried out as though
       the session_role were the one that had logged in originally.
     type: str
-  login_password:
-    description:
-    - Password used to authenticate with PostgreSQL.
-    type: str
-  login_host:
-    description:
-    - Host running PostgreSQL.
-    type: str
-  login_unix_socket:
-    description:
-    - Path to a Unix domain socket for local connections.
-    type: str
-  ssl_mode:
-    description:
-    - Determines whether or with what priority a secure SSL TCP/IP connection
-      will be negotiated with the server.
-    - See U(https://www.postgresql.org/docs/current/static/libpq-ssl.html) for
-      more information on the modes.
-    - Default of C(prefer) matches libpq default.
-    type: str
-    default: prefer
-    choices: [ allow, disable, prefer, require, verify-ca, verify-full ]
-  ca_cert:
-    description:
-    - Specifies the name of a file containing SSL certificate authority (CA) certificate(s).
-    - If the file exists, the server's certificate will be verified to be signed by one of these authorities.
-    type: str
-    aliases:
-    - ssl_rootcert
 
 notes:
 - Physical replication slots were introduced to PostgreSQL with version 9.4,
@@ -135,6 +94,7 @@ requirements:
 author:
 - John Scalia (@jscalia)
 - Andew Klychkov (@Andersson007)
+extends_documentation_fragment: postgres
 '''
 
 EXAMPLES = r'''
@@ -340,7 +300,7 @@ def main():
         "login_password": "password",
         "port": "port",
         "sslmode": "ssl_mode",
-        "ca_cert": "sslrootcert"
+        "ca_cert": "ssl_rootcert"
     }
     kw = dict((params_map[k], v) for (k, v) in module.params.items()
               if k in params_map and v != '')