Fix nova compute failing to start on openSUSE 12.3

The syntax of polkit authorization rules is different now. Using the same code
as for Fedora 18 now.

Change-Id: I4f66d8fc65c90a309aab478a4df35c77c7669314
RHEL6 support rpms

Install some rpms required for operation on RHEL6.  Additionally,
remove some system packages that interfere with pip installs.

Change-Id: I273ce59d7bf066e73d524f61b8ad048599101dab
Grab upstream nodejs for RHEL6

RHEL6 has no nodejs in main packages or in EPEL.  The easiest way is
to just install the upstream binary version which works fine for the
very minimal usage by lesscss.

Change-Id: Ia35e7dbaf4c7add43797d6b7d0c846bab1cf0cb0
lib/database: Fixed a bug in database_connection_url

The changes from https://review.openstack.org/#/c/23364/ simplified
the usage of database_connection_url_mysql and
database_connection_url_postgresql without making the proper changes
to database_connection_url.

Fixes: bug #1167668
Signed-off-by: Tal Kain <tal.kain@ravellosystems.com>
Change-Id: I5115d123ad794f2eb2e144b76932031af5248f26
Correcting comment for HOST_IP_IFACE

Change-Id: I4c3438dc1168401c193841976cf8ba8534b33679
Fixes: bug #1174455
Merge "Grab upstream nodejs for RHEL6"
Merge "lib/database: Fixed a bug in database_connection_url"
Merge "Fix nova compute failing to start on openSUSE 12.3"
Merge "Correcting comment for HOST_IP_IFACE"