Add workflow dispatch event on build workflows

Author: 181192

.github/workflows/controller-build.yaml

@@ -1,6 +1,7 @@
 name: Build Controller
 
 on:
+  workflow_dispatch:
   push:
     branches:
     - master

.github/workflows/vaultenv-build.yaml

@@ -1,6 +1,7 @@
 name: Build Vault Env
 
 on:
+  workflow_dispatch:
   push:
     branches:
     - master

.github/workflows/webhook-build.yaml

@@ -1,6 +1,7 @@
 name: Build WebHook
 
 on:
+  workflow_dispatch:
   push:
     branches:
     - master