Fix xenapi functions' tests

The tests got outdated, this fix makes the tests pass again.

Change-Id: Iadddfbf34bf79ba455811645e766c2f3d0fcca84
Workaround missing zip snapshot

At the moment, xenserver installation depends on github snapshots.
Unfortunately, git.openstack.org does not have that capability. This
fix includes:

 - Exit with error code, if a download fails
 - create proper urls, even if they are using the git protocol
 - set git base to github - so we are able to do snapshots

Fixes bug: 1259905

Change-Id: I8d0cf8bf8abb16ee0a4b138a6719409c75e7a146
Fix duplicated rootwrap.d in lib/ironic

The Ironic setup of devstack is duplicating the rootwrap.d directory at
/etc/ironic/rootwrap.d/rootwrap.d, this will cause the ironic-rootwrap
command to fail to execute. This patch is removing the duplicated
rootwrap.d directory.

Change-Id: I24844c24620b5b33ad1a6acd0d872e9df11d6d89
Closes-Bug: #1268930
Sanitize language settings

To avoid commands bailing out with "unsupported locale setting" errors.

Change-Id: I54ae4cd84a0a4b4875533181b1d96563a1604775
Remove old DEFAULT.root_helper setting

root_helper is now under the agent group and not DEFAULT

Change-Id: I11867f7ceff1f3b8b0bc2ef8aa508b6ecee653fc
Make unstack.sh more like stack.sh

unstack.sh and stack.sh both have to "configure projects", but the
code was different. This change makes it so the 2 sections of the
files are the same.

Change-Id: Ia06f8bbfbe2a6e87fb406e34e13a39bd7fa9e5af
Do not set bind_host for heat APIs

This results in the APIs binding to 0.0.0.0
which is what other devstack services bind to anyway.

Change-Id: Ic229dbed02b224fe7c5e14f20998bb5d5987aa39
Closes-Bug: #1172991
Remove unnecessary slash from ceilometer endpoint

The last slash in ceilometer endpoint is not needed, it should be
removed because it will generate redundant slash which has been
treated as a bug in ceilometer.

Change-Id: Ifcff9b63921f5b1dda667d8e77aab22ca2928a8b
Closes-Bug: #1271556
ref: https://review.openstack.org/#/c/63279/
Add get-pip.py/*.qcow2 to .gitignore

files/get-pip.py and *.qcow2 are installed by DevStack itself. So
we shouldn't manage it with the git repository.

Change-Id: Ib22ed814d3d3eb33ef3ff45874b0ff36b2036cf5
Use savanna-db-manage to init db for Savanna

It uses alembic migrations to initialize database.

Change-Id: I6cf01f69c6bc7c9e403040607dd397cfc3b574a4
Kill process groups in screen_stop()

Previously only the top child process was killed, killing the process
group also takes all of the child processes with it.

Closes-bug: 1271889
Change-Id: If1864cc4f1944f417ea3473d81d8b6e8e40030c2
Merge "Use savanna-db-manage to init db for Savanna"
Merge "Fix duplicated rootwrap.d in lib/ironic"
Merge "Kill process groups in screen_stop()"
Merge "Add get-pip.py/*.qcow2 to .gitignore"
Merge "Remove unnecessary slash from ceilometer endpoint"
Merge "Remove old DEFAULT.root_helper setting"
Merge "Sanitize language settings"
Merge "Fix xenapi functions' tests"
Merge "Make unstack.sh more like stack.sh"