Moved all docker image builds to mirantis namespace

Change-Id: Ib12ff11d99e83d1221a9ae13bf103d217720fa22
diff --git a/jenkins/client/job/docker/init.yml b/jenkins/client/job/docker/init.yml
index d4c15b6..e3619b1 100644
--- a/jenkins/client/job/docker/init.yml
+++ b/jenkins/client/job/docker/init.yml
@@ -76,7 +76,7 @@
             param:
               IMAGE_NAME:
                 type: string
-                default: "tcpcloud/{{name}}"
+                default: "mirantis/{{name}}"
               IMAGE_GIT_URL:
                 type: string
                 default: "${_param:jenkins_gerrit_url}/mk/docker-{{name}}"
@@ -97,7 +97,7 @@
                 default: ""
               REGISTRY_CREDENTIALS_ID:
                 type: string
-                default: "dockerhub"
+                default: "mirantis-dockerhub"
               DOCKER_GIT_TAG:
                 type: boolean
                 default: "true"