chore(controller): simplify drone configuration

Author: duanhongyi

.drone/drone.yml

@@ -41,12 +41,6 @@ steps:
     - push
     - tag
 
-trigger:
-  event:
-  - push
-  - tag
-  - pull_request
-
 ---
 kind: pipeline
 type: exec
@@ -71,11 +65,10 @@ steps:
       from_secret: docker_username
     DOCKER_PASSWORD:
       from_secret: docker_password
-
-trigger:
-  event:
-  - push
-  - tag
+  when:
+    event:
+    - push
+    - tag
 
 ---
 kind: pipeline
@@ -134,8 +127,7 @@ steps:
       from_secret: chartmuseum_password
     CHARTMUSEUM_API:
       from_secret: chartmuseum_api
-
-trigger:
-  event:
-  - push
-  - tag
+  when:
+    event:
+    - push
+    - tag