Prometheus is creating user and granting permissions
to database from which is gathering metrics. This
process is different when haproxy/proxysql is used.
Proxysql:
- kolla-ansible should use root_shard_ID user to connect
to ProxySQL endpoint and it is routed to proper shard.
Haproxy:
- kolla-ansible should use root user to connect to HAProxy
endpoint and that's all.
If proxysql is not used, mariadb role will not create user
shard_root_ID user in bootstrap (from my perspective of view
it should), and therefore it will fail when HAProxy is used.
This patch is just fixing user to connect.
Change-Id: Icd07807b2c404eb4d3f398879639b17f1e7949c2
c5500bdfd2