Pass list of packages directly to package task
Pass list of packages directly to package task

There is no need to loop over the list of packages, this is actually
slower.

Change-Id: I38361ccc9a5c84b8d2cff8fe813475e115e47bf0
Signed-off-by: Paul Belanger <e7139c8e6c4ea75cc1c287ce081b2dc0f3ab39ec@redhat.com>

openstack/ansible-role-nodepool,openstack/ansible-role-nodepool