Install requirements on env preparation

Change-Id: I5479137974bed4f8309d41bc5f2c2f320519686a
diff --git a/src/com/mirantis/mcp_qa/EnvActions.groovy b/src/com/mirantis/mcp_qa/EnvActions.groovy
index 4df4f64..bc88d64 100644
--- a/src/com/mirantis/mcp_qa/EnvActions.groovy
+++ b/src/com/mirantis/mcp_qa/EnvActions.groovy
@@ -18,6 +18,11 @@
             "\"${WORKSPACE}/fuel-ccp-installer/\"!"
         fi
     '''
+
+    sh '''
+        . ${VENV_PATH}/bin/activate
+        pip install --upgrade --upgrade-strategy=only-if-needed -r fuel_ccp_tests/requirements.txt
+    '''
 }
 
 /**