Changed openstack version to Mitaka in info output

docker-ci-tempest should print actual openstack version

Change-Id: I7a29697e24825be799c74c6b6864c8ac7adab751
Related-prod: PROD-29058
diff --git a/bin/entrypoint.sh b/bin/entrypoint.sh
index 610c17e..1a1cb43 100755
--- a/bin/entrypoint.sh
+++ b/bin/entrypoint.sh
@@ -3,7 +3,7 @@
 set -xe
 
 function _info(){
-  echo -e "=== INFO: PIKE"
+  echo -e "=== INFO: MITAKA"
   cat /etc/build_timestamp || true
   set +x
   echo -e "=== INFO: tempest version:"