Move PG version check to awx-manage check_db & migrate commands (#15463)

* Move PG version check to check_db command

Move to utils, check in pre_migrate signal

* Add back in environment var skip

* Add tests for compliance

tests Assisted-By: claude

awx/main/management/commands/check_db.py

@@ -1,9 +1,11 @@
 # Copyright (c) 2015 Ansible, Inc.
 # All Rights Reserved
 
-from django.core.management.base import BaseCommand
+from django.core.management.base import BaseCommand, CommandError
 from django.db import connection
 
+from awx.main.utils.db import db_requirement_violations
+
 
 class Command(BaseCommand):
     """Checks connection to the database, and prints out connection info if not connected"""
@@ -13,4 +15,8 @@ class Command(BaseCommand):
             cursor.execute("SELECT version()")
             version = str(cursor.fetchone()[0])
 
+        violations = db_requirement_violations()
+        if violations:
+            raise CommandError(violations)
+
         return "Database Version: {}".format(version)