Add tempest_image_version in shared lib

Change-Id: I7c0fbd078aeae88d8051684c548cb2c2770b37a8
diff --git a/src/com/mirantis/system_qa/SharedPipeline.groovy b/src/com/mirantis/system_qa/SharedPipeline.groovy
index d34867e..58da420 100644
--- a/src/com/mirantis/system_qa/SharedPipeline.groovy
+++ b/src/com/mirantis/system_qa/SharedPipeline.groovy
@@ -204,6 +204,7 @@
         // Run pytest tests
         def common = new com.mirantis.mk.Common()
         def tcp_qa_refs = env.TCP_QA_REFS ?: ''
+        def tempest_image_version = env.TEMPEST_IMAGE_VERSION ?: 'pike'
         def parameters = [
                 string(name: 'ENV_NAME', value: "${ENV_NAME}"),
                 string(name: 'PASSED_STEPS', value: passed_steps),
@@ -216,7 +217,7 @@
                 string(name: 'REPOSITORY_SUITE', value: "${MCP_VERSION}"),
                 string(name: 'MCP_IMAGE_PATH1604', value: "${MCP_IMAGE_PATH1604}"),
                 string(name: 'IMAGE_PATH_CFG01_DAY01', value: "${IMAGE_PATH_CFG01_DAY01}"),
-                string(name: 'TEMPEST_IMAGE_VERSION', value: "${TEMPEST_IMAGE_VERSION}"),
+                string(name: 'TEMPEST_IMAGE_VERSION', value: "${tempest_image_version}"),
 
             ]
         common.printMsg("Start building job 'swarm-run-pytest' with parameters:", "purple")