Add coreos-alpha weave manual CI builds

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>

.gitlab-ci.yml

@@ -194,6 +194,14 @@ before_script:
   CLOUD_REGION: europe-west1-b
   CLUSTER_MODE: ha
 
+.coreos_alpha_weave_ha_variables: &coreos_alpha_weave_ha_variables
+# stage: deploy-gce-special
+  KUBE_NETWORK_PLUGIN: weave
+  CLOUD_IMAGE: coreos-alpha
+  CLOUD_REGION: us-west1-a
+  CLUSTER_MODE: ha
+  BOOTSTRAP_OS: coreos
+
 # Builds for PRs only (auto)
 coreos-calico-sep:
   stage: deploy-gce-part1
@@ -355,7 +363,17 @@ centos7-calico-ha-triggers:
   when: on_success
   only: ['triggers']
 
-#TODO(bogdando) add coreos-weave and *triggers
+# no triggers yet https://github.com/kubernetes-incubator/kargo/issues/613
+coreos-alpha-weave-ha:
+  stage: deploy-gce-special
+  <<: *job
+  <<: *gce
+  variables:
+    <<: *gce_variables
+    <<: *coreos_alpha_weave_ha_variables
+  when: manual
+  except: ['triggers']
+  only: ['master', /^pr-.*$/]
 
 syntax-check:
   <<: *job