When deploying on hosts with PyMongo version > 3.0, as found
on Xenial hosts, The bootstrap playbook will fail due to the
following error:
'The localhost login exception only allows the first admin account to be created'
To resolve this error a "root" user create and password setup
has been added to the tasks and the required login credentials
have been passed to the ceilometer and aodh tasks.
Change-Id: Iaa29b4256dd4b3ac0774a05fc55f5b845ee57732
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>