object: fix the deafult multisite zonegroup creation

there was a bug in the code which doesn't
sets realm if we try to get the zonegoup
so because of that 1.12 this backport pr
for original change was not working

Signed-off-by: parth-gr <partharora1010@gmail.com>
(cherry picked from commit a9c77280c6)

pkg/operator/ceph/object/objectstore.go

@@ -392,7 +392,11 @@ func createMultisiteConfigurations(objContext *Context, configType, configTypeAr
 	args = append([]string{configType}, args...)
 	args = append(args, configTypeArg)
 	// get the multisite config before creating
-	output, getConfigErr := RunAdminCommandNoMultisite(objContext, true, configType, "get", configTypeArg)
+	configTypeArgs := []string{configType, "get", configTypeArg}
+	if configType == "zonegroup" {
+		configTypeArgs = append(configTypeArgs, fmt.Sprintf("--rgw-realm=%s", objContext.Realm))
+	}
+	output, getConfigErr := RunAdminCommandNoMultisite(objContext, true, configTypeArgs...)
 	if getConfigErr == nil {
 		return nil
 	}