As discussed in the team meeting [1] this commit copies the Monasca
charts from monasca/monasca-helm repository. The goal is to adapt these
charts to OSH standards and patterns, and then move them to
openstack-helm and openstack-helm-infra repositories accordingly.
[1] http://eavesdrop.openstack.org/meetings/openstack_helm/2019/openstack_helm.2019-02-12-15.01.html
Change-Id: I261187de943046b7314ae6ab6b0f997624952d5e