Re-Add docker:dind for Packet CI (#4567)

.gitlab-ci/gce.yml

@@ -6,10 +6,6 @@
   CI_PLATFORM: "gce"
   PRIVATE_KEY: $GCE_PRIVATE_KEY
 
-.docker_service: &docker_service
-  services:
-    - docker:dind
-
 .cache: &cache
   cache:
     key: "$CI_BUILD_REF_NAME"
@@ -19,7 +15,6 @@
 
 .gce: &gce
   extends: .testcases
-  <<: *docker_service
   <<: *cache
   variables:
     <<: *gce_variables

.gitlab-ci/packet.yml

@@ -104,7 +104,7 @@ packet_rhel7-canal-sep:
 packet_centos7-calico-ha:
   stage: deploy-special
   <<: *packet
-  when: manual
+  when: on_success
   except: ['triggers']
   only: ['master', /^pr-.*$/]