Adds python2 to general packages to be installed

devstack works only for python2 python3 will break the install.
This commit adds python2 to the general dependencies of ubuntu

Change-Id: I7721ff85a63f635ff798407a5ee1d6766405c683
Closes-Bug: #1188215
Workaround Cinder "wishlist" bug 1255593 for multi-backend volume_clear

Cinder currently only applies the volume_clear setting from the DEFAULT
section of cinder.conf if you're using a single backend.

The Cinder team has determined this is a 'wishlist' item to propagate
volume_clear to each backend, but it does impact usability and
performance.

To improve the performance of running Tempest with multi-backends in the
gate, workaround the bug in devstack.

Related-Bug: #1255593

Change-Id: Ia0ff5422f53eeda9a3ac4336eefec3b9bdea6da2
Qemu emulator requires at least 128MB of memory to boot on ppc64

The default nano and micro flavors need more memory to boot on
ppc64. New flavors are 128MB and 256MB, respectively.
Trailing spaces removed, again.

Change-Id: Ic6740bda959754380982e67f753876dc6d984685
Added keystone auth port to the nova config

Added the $KEYSTONE_AUTH_PORT to the keystone_authtoken
section of the create_nova_conf function.
This is required as without it nova doesn't communicate
to the keystone server. Generating an "Unauthorised (HTTP 401)"
page when acceesing /admin/.

Change-Id: Ibf4d9d1c21081a1e3de4ea765f4db6de5fbdb237
Fix the amount of workers spawned for non proxies

We were running as auto so swift would spawn a lot of processes
consuming memory and CPU which are not really neeeded in a devstack env
(and bad for the jenkins vm).

Closes-Bug: 1259548
Change-Id: I6b5266186168fe99568dda5453b436c2f9cfedb3
Neutron/NVP plugin: fix 'ip link' usage

Closes-bug: #1258141

Change-Id: Id26eca6c3174a108d1822440956ab7f66cc3ebd3
Define Q_L3_ENABLED=True for MidoNet plugin

Change-Id: Iabf7a5ff2e53b1822a327600da9acac8cf6a59f7
Merge "Workaround Cinder "wishlist" bug 1255593 for multi-backend volume_clear"
Merge "Qemu emulator requires at least 128MB of memory to boot on ppc64"
Merge "Added keystone auth port to the nova config"
Merge "Fix the amount of workers spawned for non proxies"
Merge "Define Q_L3_ENABLED=True for MidoNet plugin"
Merge "Adds python2 to general packages to be installed"
Merge "Neutron/NVP plugin: fix 'ip link' usage"