Add SIGNED_IMAGES_PATH parameter

Related: PRODX-36816
Change-Id: I2bcab4840083411eaa8b27ab6dbe69a913cdd1b5
diff --git a/src/com/mirantis/mk/KaasUtils.groovy b/src/com/mirantis/mk/KaasUtils.groovy
index d6a9250..b31d5f9 100644
--- a/src/com/mirantis/mk/KaasUtils.groovy
+++ b/src/com/mirantis/mk/KaasUtils.groovy
@@ -1523,6 +1523,7 @@
         'CHECK_REPOS': '-check-repos',
         'DESTINATION_REGISTRY': '-dst-repo',
         'DESTINATION_REGISTRY_TYPE': '-dst-repo-type',
+        'SIGNED_IMAGES_PATH': '-signed-images-path',
         'DOCKER_CLEAN': '-cleanup',
         'DOCKER_REPO_PREFIX': '-docker-repo-prefix',
         'DOCKER_TAG': '-docker-tag',