Move mcp_docker_registry to defaults

Change-Id: I8645f8df5290112106ef01801f8db86505c327c9
diff --git a/jenkins/client/job/deploy/lab/deploy.yml b/jenkins/client/job/deploy/lab/deploy.yml
index 1914ec5..7e419f6 100644
--- a/jenkins/client/job/deploy/lab/deploy.yml
+++ b/jenkins/client/job/deploy/lab/deploy.yml
@@ -1,6 +1,5 @@
 parameters:
   _param:
-    mcp_docker_registry: 'docker-prod-local.artifactory.mirantis.com'
     jenkins_deploy_jobs: []
     heat_stack_zone_job_param:
       type: string
diff --git a/jenkins/client/job/k8s-test/mcp-k8s-metallb-test-pipeline.yml b/jenkins/client/job/k8s-test/mcp-k8s-metallb-test-pipeline.yml
index 8ebd8eb..3c75156 100644
--- a/jenkins/client/job/k8s-test/mcp-k8s-metallb-test-pipeline.yml
+++ b/jenkins/client/job/k8s-test/mcp-k8s-metallb-test-pipeline.yml
@@ -1,5 +1,6 @@
 parameters:
   _param:
+    # Thise is exactly in-house mirror. Please don't change it to .com
     mcp_docker_registry: 'docker-dev-local.docker.mirantis.net'
   jenkins:
     client:
diff --git a/jenkins/client/job/validate.yml b/jenkins/client/job/validate.yml
index c0ebf40..a3eb1ee 100644
--- a/jenkins/client/job/validate.yml
+++ b/jenkins/client/job/validate.yml
@@ -2,7 +2,6 @@
   _param:
     jenkins_salt_api_url: "http://${_param:salt_master_host}:6969"
     cvp_sanity_default_repo: "https://github.com/Mirantis/cvp-sanity-checks"
-    mcp_docker_registry: 'docker-prod-local.artifactory.mirantis.com'
   jenkins:
     client:
       view: