Comment 3 for bug 1532969

Reviewed: https://review.openstack.org/266485
Committed: https://git.openstack.org/cgit/openstack/trove/commit/?id=293dafb56501702fc35c79d7c3c4efcf1fdaeab3
Submitter: Jenkins
Branch: master

commit 293dafb56501702fc35c79d7c3c4efcf1fdaeab3
Author: Doug Shelley <email address hidden>
Date: Tue Jan 12 16:54:19 2016 +0000

    Fix Percona XtraDB Cluster guest to work with v5.6

    The current implmentation of Percona clusters only supports
    PXC 5.5. To make the implementation work with v5.6, some changes
    need to be made to the base Mysql manager. The biggest change
    is that we can no longer store the os_admin client credentials
    in the server my.cnf file. This commit moves those credentials to
    a .my.cnf file stored in the trove homedir. This will be read
    by the guest when attempting sqlchemy connections to the local
    mysql database and will also be picked up automatically by other
    mysql clients (such as mysqladmin).

    Also, since PXC 5.6 requires PXB 2.3, this commit fixes the issue
    previously discovered with that combination. The previous fix was
    to pin PXB to v2.2. The fix is to specify host=127.0.0.1 in the
    client section of my.cnf.

    Change-Id: Ib73b4f8ba40ddf211d0ec88069c4807186fce139
    Parial-bug: 1532969