[CI] Add cf-host input to new CF AT env workflow

Author: onobc

.github/workflows/acceptance-tests-for-rabbit-2.yml

@@ -7,6 +7,10 @@ on:
         type: string
         default: ''
         description: 'Test classes'
+      cf-host:
+        type: string
+        default: ''
+        description: 'CF host name (e.g. "bucharest")'
   workflow_call:
     inputs:
       tests:
@@ -45,7 +49,7 @@ jobs:
   rabbit-2:
     uses: ./.github/workflows/at-common-workflow.yml
     with:
-      cf_host: axle-797629
+      cf_host: ${{ inputs.cf-host != '' && inputs.cf-host || 'wane-822834' }}
       cf_index: 2
       binder: rabbit
       tests: ${{ inputs.tests }}