Create a safe rand name for stack name

To avoid the name conflict in integration test.

Change-Id: Ia64e42403f29056008d69aa5c60d396564d66755

telemetry_tempest_plugin/scenario/telemetry_integration_gabbits/autoscaling.yaml

@@ -28,7 +28,7 @@ tests:
 
     - name: control stack status
       desc: Checks the stack have been created successfully
-      url: $ENVIRON['HEAT_SERVICE_URL']/stacks/integration_test
+      url: $ENVIRON['HEAT_SERVICE_URL']/stacks/$ENVIRON['STACK_NAME']
       redirects: true
       method: GET
       status: 200
@@ -99,13 +99,13 @@ tests:
           count: 30
           delay: 1
       response_strings:
-          - "integration_test-cpu_alarm_high-"
+          - "$ENVIRON['STACK_NAME']-cpu_alarm_high-"
       response_json_paths:
           $[0].state: alarm
 
     - name: get stack location
       desc: Get the stack location
-      url: $ENVIRON['HEAT_SERVICE_URL']/stacks/integration_test
+      url: $ENVIRON['HEAT_SERVICE_URL']/stacks/$ENVIRON['STACK_NAME']
       method: GET
       status: 302
 
@@ -117,7 +117,7 @@ tests:
 
     - name: get deleted stack
       desc: Check the stack have been deleted
-      url: $ENVIRON['HEAT_SERVICE_URL']/stacks/integration_test
+      url: $ENVIRON['HEAT_SERVICE_URL']/stacks/$ENVIRON['STACK_NAME']
       redirects: true
       method: GET
       poll:

telemetry_tempest_plugin/scenario/telemetry_integration_gabbits/create_stack.json

@@ -1,5 +1,5 @@
 {
-    "stack_name": "integration_test",
+    "stack_name": "$ENVIRON['STACK_NAME']",
     "template": {
         "heat_template_version": "2013-05-23",
         "description": "Integration Test AutoScaling with heat+ceilometer+gnocchi+aodh",

telemetry_tempest_plugin/scenario/test_telemetry_integration.py

@@ -13,6 +13,7 @@
 import os
 
 from tempest import config
+from tempest.lib.common.utils import data_utils
 from tempest.scenario import manager
 
 from telemetry_tempest_plugin.scenario import utils
@@ -97,6 +98,7 @@ class TestTelemetryIntegration(manager.ScenarioTest):
             "GLANCE_IMAGE_NAME": self.glance_image_create(),
             "NOVA_FLAVOR_REF": config.CONF.compute.flavor_ref,
             "NEUTRON_NETWORK": networks[0].get('id'),
+            "STACK_NAME": data_utils.rand_name('telemetry'),
         })