This commit
1. Provides a playbook to install the filebeat agent on all
undercloud/overcloud nodes
2. Provides another playbook that adds the browbeat uuid to the
filebeat config file and starts filebeat during browbeat run
3. Corresponding changes in browbeat.py and browbeat/tools.py
to run the playbook to insert custom browbeat uuid in the
filebeat configuration.
Change-Id: Idd2efaf931f4ff581db715a04adef738f81d281c
fbf309baee