missing space in docker run command

Change-Id: Ib5d005987de016360e3295e3ffbdbbacd3960401
diff --git a/src/com/mirantis/mk/Test.groovy b/src/com/mirantis/mk/Test.groovy
index 60686cf..290f800 100644
--- a/src/com/mirantis/mk/Test.groovy
+++ b/src/com/mirantis/mk/Test.groovy
@@ -55,7 +55,7 @@
                                          "-e TEMPEST_CONF=mcp.conf " +
                                          "-e SKIP_LIST=mcp_skip.list " +
                                          "-e SOURCE_FILE=keystonercv3 " +
-                                         "-e LOG_DIR=${logDir}" +
+                                         "-e LOG_DIR=${logDir} " +
                                          "-v /root/:/home/rally ${dockerImageLink} >> docker-tempest.log")
     }
     else {