Move ldap image to separate file as it's not always required

Include classes with jenkins images into stack definition.
Change-Id: I34c3033e88a030cacc476c2fc8337c9b78ef5558
Related-bug: #PROD-25515 (PROD:25515)
(cherry picked from commit 555d42ff8bdce31cdccdbcb8bbf62871df75c5b6)
diff --git a/docker/client/images/ldap.yml b/docker/client/images/ldap.yml
new file mode 100644
index 0000000..f98e9c5
--- /dev/null
+++ b/docker/client/images/ldap.yml
@@ -0,0 +1,7 @@
+parameters:
+  docker:
+    client:
+      enabled: true
+      images:
+      - ${_param:docker_image_openldap}
+      - ${_param:docker_image_phpldapadmin}
\ No newline at end of file