CI: Fix prometheus-efk scenario with TLS enabled

Change-Id: Ic55a7384c298ef517aa4b7f0eaa67d53b5d70df0

tests/run.yml

@@ -521,6 +521,8 @@
             cmd: test-prometheus-efk.sh
             executable: /bin/bash
             chdir: "{{ kolla_ansible_src_dir }}"
+          environment:
+            TLS_ENABLED: "{{ tls_enabled }}"
           when: scenario == "prometheus-efk"
 
         - name: Run test-venus.sh script

tests/test-prometheus-efk.sh

@@ -39,6 +39,9 @@ function check_elasticsearch {
         --location
         --fail
     )
+    if [[ "$TLS_ENABLED" = "True" ]]; then
+        args+=(--cacert $OS_CACERT)
+    fi
     if ! curl "${args[@]}" $ELASTICSEARCH_URL > $output_path; then
         return 1
     fi