Add support for tuskar-api service

Adds initial support for configuring and starting the tuskar-api
service.

To enable, add the following to your localrc:

enable_service tuskar
enable_service tuskar-api

The aim of this addition is to provide a more accessible (non devtest)
way for developers to run up tuskar in a familiar devstack environment.

See the official repos for more information:
https://github.com/openstack/tuskar/
https://github.com/openstack/python-tuskarclient

Change-Id: Id0c3c0d3a38100c66dbe6e3adf1f715162f99742
Rename apts to debs

apts aren't a thing, debs are. apt-get installs debs, like yum installs
rpms. Another option would be to rename rpms to yums, but that is even
sillier, considering then for suse we'd have to call it "zypper-suse" or
something, even though it would want to consume yums-general as a base.

Include a symlink to the old name to help out with grenade. The symlink
should go away later.

This is a long-standing annoyance of mine.

Related-to: I915f0e59c13d8cf5fb3549c6202f8aa2f8be0856
Change-Id: I0416180db5b6add996ce5b48c6966c1b68adbcb0
Return mysql-server to default for all ubuntu installs

Change: I97cbede806e5c00363c7174fa1e9f286de96aab6 altered
the logic in lib/databases/mysql from installing mariadb only if
one was using rhel7 to installing it by default unless one was using
rhel6.

Change: Iae9a7a1c09f1fc83573c3926b3470955c244c401
Attempted to fix this, but only does so for precise.

Unless mariadb has become the default, I strongly prefer to keep
standard mysql as the database on ubuntu (precise or otherwise).

Closes-Bug: 1395776

Change-Id: I3afb89ae6d55405313b7219dd6daa24d9ca80f70
Use new cafile option in nova cinder options

ca_certificate_file is deprecated in favour of using the standard
options from keystoneclient session.

Change-Id: I611da719fb3a95d0a9c2f6ad43e2c083ea7d6862
Use the service catalog when talking to cinder

The cinder endpoints should be correctly established in the service
catalog. There is no reason to provide an overriding endpoint_template.

Change-Id: I9b206fa22a8271a0fb65789d139ead35dfb1ea0d
Ceph: undefine secret from nova.conf when deleting secret

At teardown time we delete the libvirt secret but leave
nova.conf referencing the stale UUID.  Remove it to make
debugging and repeated runs less error-prone.

Additionally, only try to delete secret if it Cinder is
enabled (causing it to be defined when deploying devstack).

Change-Id: Id5e1290b8dcfd79238f02e31084ab12c3d6aed5f
drop tempest xml variable setting

tempest has dropped xml support, this variable no longer does
anything.

Change-Id: Iab4dbb88f6f01fe301fd54b3ac53995bed1c485a
Merge "Return mysql-server to default for all ubuntu installs"
Merge "Ceph: undefine secret from nova.conf when deleting secret"
Merge "Use new cafile option in nova cinder options"
Merge "Use the service catalog when talking to cinder"
Merge "Rename apts to debs"
Merge "Add support for tuskar-api service"
Merge "drop tempest xml variable setting"