Introduce Guru Meditation Reports into Heat

This commit integrates functionality from the `openstack.common.report`
module into Heat. This enables Heat services to receive SIGUSR1 and
print a Guru Meditation Report to stderr or file. The required modules
were added to 'openstack-common.conf' as well.

Change-Id: I36af98590e5556f012b0e9f79e21585e216b7280
Blueprint: guru-meditation-report
Co-Authored-By: huangtianhua <huangtianhua@huawei.com>

bin/heat-api-cfn

@@ -35,6 +35,7 @@ if os.path.exists(os.path.join(possible_topdir, 'heat', '__init__.py')):
 from oslo_config import cfg
 import oslo_i18n as i18n
 from oslo_log import log as logging
+from oslo_reports import guru_meditation_report as gmr
 from oslo_service import systemd
 import six
 
@@ -66,6 +67,7 @@ if __name__ == '__main__':
         LOG.info(_LI('Starting Heat API on %(host)s:%(port)s'),
                  {'host': host, 'port': port})
         profiler.setup('heat-api-cfn', host)
+        gmr.TextGuruMeditation.setup_autorun(version)
         server = wsgi.Server()
         server.start(app, cfg.CONF.heat_api_cfn, default_port=port)
         systemd.notify_once()