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
Remove old DEFAULT.root_helper setting

root_helper is now under the agent group and not DEFAULT

Change-Id: I11867f7ceff1f3b8b0bc2ef8aa508b6ecee653fc
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
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 "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"