postgresql_pg_hba: Exception when two lines with same weight are compared (#59198)

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

@@ -573,11 +573,11 @@ class PgHbaRule(dict):
             return myweight < hisweight
         try:
             return self['src'] < other['src']
-        except (TypeError, KeyError):
+        except TypeError:
             return self.source_type_weight() < other.source_type_weight()
-        errormessage = 'We have two rules ({1}, {2})'.format(self, other)
-        errormessage += ' with exact same weight. Please file a bug.'
-        raise PgHbaValueError(errormessage)
+        except Exception:
+            # When all else fails, just compare the exact line.
+            return self.line() < other.line()
 
     def source_weight(self):
         """Report the weight of this source net.

test/integration/targets/postgresql/defaults/main.yml

@@ -12,7 +12,7 @@ db_session_role2: 'session_role2'
 
 pg_hba_test_ips:
 - contype: local
-  users: 'all,postgres'
+  users: 'all,postgres,test'
 - source: '0000:ffff::'
   netmask: 'ffff:fff0::'
 - source: '192.168.0.0/24'

test/integration/targets/postgresql/tasks/postgresql_pg_hba.yml

@@ -143,8 +143,9 @@
 - assert:
     that:
     - 'pg_hba.pg_hba == [
-           { "db": "all", "method": "md5", "type": "local", "usr": "postgres" },
            { "db": "all", "method": "ldap", "type": "local", "usr": "+some", "options": "ldapserver=example.com ldapport=389 ldapprefix=\"cn=\"" },
+           { "db": "all", "method": "md5", "type": "local", "usr": "postgres" },
+           { "db": "all", "method": "md5", "type": "local", "usr": "test" },
            { "db": "all", "method": "md5", "type": "local", "usr": "all" },
            { "db": "all", "method": "cert", "src": "blue", "type": "hostssl", "usr": "+some", "options": "clientcert=1 map=mymap" },
            { "db": "all", "method": "cert", "src": "red", "type": "hostssl", "usr": "+some", "options": "clientcert=1 map=mymap" },