Adds Gradle Wrapper Validation to Buildkite

Author: oguzkocer

.buildkite/pipeline.yml

@@ -6,9 +6,17 @@ agents:
 common_params:
   # Common plugin settings to use with the `plugins` key.
   - &common_plugins
-    - automattic/bash-cache#2.6.0
+    - automattic/bash-cache#2.11.0
 
 steps:
+  - label: "Gradle Wrapper Validation"
+    command: |
+      validate_gradle_wrapper
+    plugins: *common_plugins
+
+  # Wait for Gradle Wrapper to be validated before running any other jobs
+  - wait
+
   - label: "Lint"
     key: "lint"
     command: .buildkite/commands/lint.sh