Fix openvswitch package and service names for openSUSE

Change-Id: Iaf173422e4d009bdd7ed7ed79af2269c44039060
Set a correct whitelist for drivers in Ironic

Ironic recently introduced a feature called Drivers
whitelist. It allows to specify the drivers that are
enabled.

The default list is not appropriate for functional and
integration testing so devstack needs to be updated.

Change-Id: Iccc81343f4d5a7dec8b371934a8c9849d9ffac23
Restart only nova-compute when deploying Ironic

lib/ironic redundantly restarts *all* Nova services as part of its bootstrap.
Only nova-compute should be restarted to ensure its resource tracker has picked
up newly enlisted Ironic nodes.  This change limits the restart to only
nova-compute and triggers it after nodes have been enlisted in Ironic.

Change-Id: I87a508d6611a16fa6b966ab18e15aa9fbcc5e8c7
Add EPEL-7 repo for RHEL7

* RHEL7 requires epel for many dependencies.
* The default RDO URL also switched to an icehouse version.
* RHEL6 RDO repo also will be configured for RHEL7, but the
  configuration variable name remains RHEL6_RDO_REPO_RPM for compatibility
  reasons.

Change-Id: I414c0f5357bf24c8d5657ea8231515461862e734
Use iniset for changing my.conf and avoid deprecated config options

The mysql config file is using INI format so use the iniset function to
manipulate it. This change also rearranges the config updates a bit
allowing us to make mulitple changes in a single sudo call. This reduces
the number of required process forks, and the number of times the 'functions'
file needs to be sourced a bit.

The "log-slow-queries" option is deprecated since mysql 5.1.29 and got
removed with 5.6.x. Use the newer slow-query-log-file/slow-query-log
settings instead. They are available since 5.1.12. This fixes a problem
with running devstack with mysql-5.6, which is e.g. part of openSUSE
13.1.

Change-Id: Iea28bf05c664b5387d51dae1a63a780344623596
Merge "Use iniset for changing my.conf and avoid deprecated config options"
Merge "Restart only nova-compute when deploying Ironic"
Merge "Fix openvswitch package and service names for openSUSE"
Merge "Set a correct whitelist for drivers in Ironic"
Merge "Add EPEL-7 repo for RHEL7"