pick random azure region (#2483)

.github/actions/e2e_test/action.yml

@@ -204,6 +204,10 @@ runs:
         echo "uuid=${uuid}" | tee -a $GITHUB_OUTPUT
         echo "prefix=e2e-${{ github.run_id }}-${{ github.run_attempt }}-${uuid}" | tee -a $GITHUB_OUTPUT
 
+    - name: Pick a random Azure region
+      id: pick-az-region
+      uses: ./.github/actions/pick_azure_region
+
     - name: Create IAM configuration
       id: constellation-iam-create
       uses: ./.github/actions/constellation_iam_create
@@ -211,7 +215,7 @@ runs:
         cloudProvider: ${{ inputs.cloudProvider }}
         namePrefix: ${{ steps.create-prefix.outputs.prefix }}
         awsZone: ${{ inputs.regionZone || 'us-east-2c' }}
-        azureRegion: ${{ inputs.regionZone || 'northeurope' }}
+        azureRegion: ${{ inputs.regionZone || steps.pick-az-region.outputs.region  }}
         gcpProjectID: ${{ inputs.gcpProject }}
         gcpZone: ${{ inputs.regionZone || 'europe-west3-b' }}
         kubernetesVersion: ${{ inputs.kubernetesVersion }}

.github/actions/pick_assignee/action.yml

@@ -1,4 +1,4 @@
-name: Pick and assignee
+name: Pick an assignee
 description: "Pick an assignee"
 
 outputs:

.github/actions/pick_azure_region/action.yml

@@ -0,0 +1,24 @@
+name: Pick an Azure region
+description: "Pick an Azure region"
+
+outputs:
+  region:
+    description: "One of the supported Azure regions"
+    value: ${{ steps.pick-region.outputs.region }}
+
+runs:
+  using: "composite"
+  steps:
+    - name: Pick a region
+      id: pick-region
+      shell: bash
+      run: |
+        possibleRegions=(
+          "westus"
+          "eastus"
+          "northeurope"
+          "westeurope"
+          "southeastasia"
+        )
+        region=${possibleRegions[$RANDOM % ${#possibleRegions[@]}]}
+        echo "region=$region" | tee -a "$GITHUB_OUTPUT"