Do a proper tls/ca cleanup in unstack

Certificates and the index were left in the data directory after
running unstack. That would break devstack on the next run.

partial blueprint devstack-https
Change-Id: I6eb552a76fb29addf4d02254c027e473d6805df1
XenAPI: Use GUEST_PASSWORD when installing DomU

We know what the GUEST_PASSWORD will be, so set it during DomU
installation; therefore if the installation fails for any reason
we have a correct GUEST_PASSWORD set rather than the obscure and
undocumented 'r00tme'

Change-Id: I684646a74f2cede43667a40556e247955e042ae4
XenAPI: Fix race condition on tailing stack.log

Stack.log is created by stack.sh, which is started by run.sh.  Using
the pid from run.sh doesn't mean that stack.log has been created yet
so wait for the log to be created before tailing

Change-Id: I86e563478949cb7bbe0d1afd80b790ba70328e3a
XenAPI: Always add latest Cirros euc image

Some tests, such as test_minimum_basic_scenario, assume qcow and if
a qcow image does not exit, falls back to the euc image.
This change ensures these tests work in the stock XenServer environment.

Change-Id: I718f178f7e5e0fa4eebd17a49caf5254124092e3
Fix default_volume_type for Cinder multi backend

The default_volume_type option doesn't support comma separated
arguments. We can only select one default volume type.
We have a variable that contains the default volume type, so we simply use it.

Closes-Bug: 1342569

Change-Id: Ibd080442f00f3d446ec374fc5906f0778d449007
Signed-off-by: Sébastien Han <sebastien.han@enovance.com>
Add WSGISocketPrefix to apache keystone config

I think since probably fdf1cffbd5d2a7b47d5bdadbc0755fcb2ff6d52f
devstack on RHEL6 fails and it comes down to:

---
2014-07-17 05:05:49.235 | +++ openstack role create admin -f value -c id
2014-07-17 05:05:49.615 | ERROR: cliff.app Service Unavailable (HTTP 503)

[Thu Jul 17 15:05:46 2014] [error] [client 10.0.2.15]
  (13)Permission denied: mod_wsgi (pid=30125): Unable to connect to WSGI
   daemon process 'keystone-public' on
   '/etc/httpd/logs/wsgi.30098.0.1.sock' after multiple attempts.
---

The apache user doesn't have permissons to this directory.  Adding
WSGISocketPath to /var/run solves it

Change-Id: If4b74019b6bd389b576fc981154bb1b3aa471c9b
Merge "Add WSGISocketPrefix to apache keystone config"
Merge "XenAPI: Fix race condition on tailing stack.log"
Merge "Fix default_volume_type for Cinder multi backend"
Merge "Do a proper tls/ca cleanup in unstack"
Merge "XenAPI: Use GUEST_PASSWORD when installing DomU"
Merge "XenAPI: Always add latest Cirros euc image"
Merge branch 'master' of github.com:openstack-dev/devstack