Add running tempest tests for logs-pipeline

monasca-common is used also by monasca-log-api. Therefore each change in
the library should be also tested with integration tests for logs
pipeline.

Change-Id: I50737e658507f7ec320d7a30c9996a2c6b020baa

.zuul.yaml

@@ -12,6 +12,7 @@
             voting: false
         - monasca-tempest-python-cassandra
         - monasca-tempest-java-cassandra
+        - monascalog-tempest
         - openstack-tox-lower-constraints
         - docker-build-monasca-base
         - legacy-monasca-common-maven-build
@@ -21,6 +22,7 @@
         - monasca-tempest-python-influxdb
         - monasca-tempest-python-cassandra
         - monasca-tempest-java-cassandra
+        - monascalog-tempest
         - openstack-tox-lower-constraints
         - legacy-monasca-common-maven-build
     post: