Hardcoding TPU7x region

tools/cloud-build/daily-tests/builds/gke-tpu-7x.yaml

@@ -50,12 +50,6 @@ steps:
   - -c
   - |
     set -e -u -o pipefail
-    echo "Sourcing find_available_zone.sh to determine zone."
-    source /workspace/tools/cloud-build/find_available_zone.sh
-    if [ -z "$${ZONE:-}" ]; then
-      echo "ERROR: ZONE not found" >&2
-      exit 1
-    fi
     set -x
     cd /workspace
     if [ "${_TEST_PREFIX}" == "daily-" ]; then
@@ -66,7 +60,6 @@ steps:
     else
         make
     fi
-    REGION="$${ZONE%-*}"
     BUILD_ID_SHORT="$${BUILD_ID:0:6}"
     EXAMPLE_BP=examples/gke-tpu-7x/gke-tpu-7x.yaml
     # adding vm to act as remote node
@@ -92,13 +85,6 @@ steps:
 
     ENABLE_SPOT="true"
     GKE_VARS_FILE="tools/cloud-build/daily-tests/tests/gke-tpu-7x.yml"
-    if [[ "$$PROVISIONING_MODEL" == "STANDARD" ]]; then
-      ENABLE_SPOT="false"
-      sed -i '/instance_labels:/,+1d' "$${GKE_VARS_FILE}"
-      sed -i '/enable_spot: true/d' "$${GKE_VARS_FILE}"
-    else
-      echo "INFO: Using $${GKE_VARS_FILE} as it is for SPOT provisioning."
-    fi
 
     sed -i -e '/reservation_affinity:/,+3c\      spot: '"$$ENABLE_SPOT"'' $${EXAMPLE_BP}
     sed -i '/reservation/d' $${EXAMPLE_BP}
@@ -107,7 +93,7 @@ steps:
     ansible-playbook tools/cloud-build/daily-tests/ansible_playbooks/base-integration-test.yml \
         --user=sa_106486320838376751393 \
         --extra-vars="project=${PROJECT_ID} build=$${BUILD_ID_SHORT}" \
-        --extra-vars="region=$${REGION} zone=$${ZONE}" \
+        --extra-vars="region=us-central1 zone=us-central1-c" \
         --extra-vars="enable_spot=$${ENABLE_SPOT}" \
         --extra-vars="@$${GKE_VARS_FILE}"
   secretEnv: ['GCLUSTER_GCS_PATH']