Incorrect IPv6 address format in mysql user-specific config file

[Johan Pas]

stack.sh creates a user-specific configuration file ~/.my.cnf for mysql. If devstack is installed with SERVICE_IP_VERSION=6 option in local.conf, you get an error when you run mysql command: "ERROR 2005 (HY000): Unknown MySQL server host '[::1]' (0)"
This seems to be due to incorrect IPv6 address format in the .my.cnf file.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/246043

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/246043
Committed: https://git.openstack.org/cgit/openstack-dev/devstack/commit/?id=199d857442108326959d391c337e3b02b98a1b1e
Submitter: Jenkins
Branch: master

commit 199d857442108326959d391c337e3b02b98a1b1e
Author: Johan Pas <email address hidden>
Date: Tue Nov 17 00:56:25 2015 +0100

    Remove brackets from IPv6 address in mysql cfgfile

    stack.sh creates a user-specific configuration file ~/.my.cnf for mysql.
    If devstack is installed with SERVICE_IP_VERSION=6 option in local.conf,
    the IPv6 host address was stored in the ~/.my.cnf file with square
    brackets. However mysql does not use bracketing for IPv6 addresses,
    resulting in 'Unknown MySQL server host' error when 'mysql' command is
    run. With this patch IPv6 host address is written to ~/.my.cnf without
    brackets.

    Closes-Bug: #1516776
    Change-Id: I27a7be8c75cf6b09b4a75dc4c9d09cd36bc5ac81