gha: k8s-on-aks: Fix cluster name

This was missed from the last series, as GHA will use the "target
branch" yaml file to start the workflow.

Basically we changed the name of the cluster created to stop relying on
the PR number, as that's not easily accessible on `workflow_run`.

Fixes: #6611

Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>

.github/workflows/run-k8s-tests-on-aks.yaml

@@ -26,7 +26,7 @@ jobs:
           - qemu
     uses: ./.github/workflows/create-aks.yaml
     with:
-      name: ${{ github.event.pull_request.number }}-${{ github.sha }}-${{ matrix.vmm }}-amd64
+      name: ${{ inputs.checkout-ref }}-${{ matrix.vmm }}-amd64
     secrets: inherit
 
   run-k8s-tests:
@@ -62,7 +62,7 @@ jobs:
 
       - name: Download credentials for the Kubernetes CLI to use them
         run: |
-          az aks get-credentials -g "kataCI" -n ${{ github.event.pull_request.number }}-${{ github.sha }}-${{ matrix.vmm }}-amd64
+          az aks get-credentials -g "kataCI" -n ${{ inputs.checkout-ref }}-${{ matrix.vmm }}-amd64
 
       - name: Deploy kata-deploy
         run: |
@@ -96,5 +96,5 @@ jobs:
     if: always()
     uses: ./.github/workflows/delete-aks.yaml
     with:
-      name: ${{ github.event.pull_request.number }}-${{ github.sha }}-${{ matrix.vmm }}-amd64
+      name: ${{ inputs.checkout-ref }}-${{ matrix.vmm }}-amd64
     secrets: inherit