imp(test): segregate variables from action

.github/workflows/test.yml

@@ -223,8 +223,8 @@ jobs:
           --tags zebrad \
           --zone "${{ env.ZONE }}"
 
-      - name: Regenerate stateful disks
-        id: sync-to-checkpoint
+      - name: Get container name from logs
+        id: get-container-name
         if: steps.create-instance.outcome == 'success'
         run: |
           INSTANCE_ID=$(gcloud compute instances describe zebrad-tests-${{ env.GITHUB_HEAD_REF_SLUG || env.GITHUB_REF_SLUG }}-${{ env.GITHUB_EVENT_PULL_REQUEST_HEAD_SHA_SHORT || env.GITHUB_SHA_SHORT }} --zone ${{ env.ZONE }} --format='value(id)')
@@ -234,12 +234,20 @@ jobs:
               echo "Using container: ${CONTAINER_NAME}"
           done
           CONTAINER_NAME=$(gcloud logging read 'logName=projects/${{ env.PROJECT_ID }}/logs/cos_containers AND jsonPayload."cos.googleapis.com/container_name":zebrad-tests-${{ env.GITHUB_HEAD_REF_SLUG || env.GITHUB_REF_SLUG }}-${{ env.GITHUB_EVENT_PULL_REQUEST_HEAD_SHA_SHORT || env.GITHUB_SHA_SHORT }}' --format="value(jsonPayload.'cos.googleapis.com/container_name')" --limit=1)
+          echo "::set-output name=zebra_container::$CONTAINER_NAME"
+
+      - name: Regenerate stateful disks
+        id: sync-to-checkpoint
+        if: steps.create-instance.outcome == 'success'
+        run: |
           gcloud compute ssh \
           zebrad-tests-${{ env.GITHUB_HEAD_REF_SLUG || env.GITHUB_REF_SLUG }}-${{ env.GITHUB_EVENT_PULL_REQUEST_HEAD_SHA_SHORT || env.GITHUB_SHA_SHORT }} \
           --zone ${{ env.ZONE }} \
           --quiet \
-          --container=${CONTAINER_NAME} \
+          --container=${{ env.ZEBRA_CONTAINER }} \
           --command="cargo test --locked --release --verbose --features enable-sentry,test_sync_past_mandatory_checkpoint_${{ env.lower_net_name }} --manifest-path zebrad/Cargo.toml sync_past_mandatory_checkpoint_${{ env.lower_net_name }}"
+        env:
+          ZEBRA_CONTAINER: ${{ steps.get-container-name.outputs.zebra_container }}
 
       # Create image from disk that will be used to sync past mandatory checkpoint test
       - name: Create image from state disk