Fixed the backup command so the backup-standby option is reset (and the backup proceeds on the master) if the standby is not configured and/or reachable.

Fixed by Cynthia Shang.

test/lib/pgBackRestTest/Full/FullRealTest.pm

@@ -210,9 +210,6 @@ sub run
             # Check backup mismatch error
             $strComment = 'fail on backup info mismatch';
 
-            # First run a successful backup to create the backup.info file
-            $oHostBackup->backup($strType, 'run a successful backup');
-
             # Load the backup.info file and munge it for testing by breaking the database version and system id
             $oHostBackup->infoMunge(
                 $oFile->pathGet(PATH_BACKUP_CLUSTER, FILE_BACKUP_INFO),

test/lib/pgBackRestTest/Full/FullSyntheticTest.pm

@@ -1145,6 +1145,15 @@ sub run
                  strOptionalParam => '--protocol-timeout=2 --db-timeout=.5 --log-level-console=warn',
                  strTest => TEST_BACKUP_STOP, fTestDelay => 2, bSupplemental => false});
         }
+
+        # Test backup from standby warning that standby not configured so option reset
+        #-----------------------------------------------------------------------------------------------------------------------
+        if (!defined($oHostDbStandby) && $bNeutralTest)
+        {
+            $strBackup = $oHostBackup->backup(
+                $strType, 'option backup-standby reset - backup performed from master', {oExpectedManifest => \%oManifest,
+                    strOptionalParam => '--log-level-console=detail --' . OPTION_BACKUP_STANDBY});
+        }
     }
     }
     }