Improve system_tests
Update documnetation
new dhclient version
os-2013.1.3
Up dhclient and db4 packages
netifaces egg
[roles] Remove constraints for roles
User should have ability to add node with any role
One more refactoring of system_tests
Remove second call for empty snapshot create
Merge pull request #1501 from dmi-try/os-2013-1-3

openstack 2013.1.3
Update debootstrap and ruby-augeas packages versions
Merge pull request #1512 from Mirantis/update-rpms

Update debootstrap and ruby-augeas packages versions
Merge pull request #1511 from monroid/fix_sys_tests

Fix for system tests via RestAPI
up bind-utils
Merge pull request #1514 from Mirantis/up-rpm

up bind-utils
Merge pull request #1505 from Mirantis/remove-constraints-for-roles

Removed constraints for roles
Fix cluster creation in HA mode. Removed unused update cluster mode function
Fix typos
Merge pull request #1507 from dmitryilyin/system_tests

Rather big refactoring of system tests script
Merge pull request #1519 from Mirantis/fix-cluster-ha

Fix cluster creation in HA mode.