packstack: added groupby for product and network driver

Updated the playbook to group by product and network driver.
Now there is just one playbook for rhos,rdo,nova,neutron across
icehouse,havana, and grizzly

Change-Id: Ibb10475d4d8bfec986bebc282aa21e180ab3acd1
update for rhos

Change-Id: I6a51cd88bf1304516515e6ee8a1e8c814d7b3f42

add selinux env variable

Change-Id: I0284e68b5f2df4ad833e5e8b4ef49c17319b8c57

rhos_poodle use gpg_check var

Change-Id: Ifc0579aad23885894292f3499c768ddc587ea882

update to variable names used w/ jjb

Change-Id: I07ea0ca74f14c0c4f8afa6b1ffe127b11bfd1b34

remove baseurl setting.. in yml now

Change-Id: Ie741c9212b9404e7887f2825e09045310df0c919

remove network_driver

Change-Id: Iad66de1b04ba263362a417d048665ef02d5a177a

fix rhos-candidate repo

Change-Id: I0f6b097fbdc6ea30bae2ad594aa1c4d26badb7cc
add packstack debug role

This will print out the config values for config.
config.product
config.version
etc..

Change-Id: I189ccf5db8da1750d7ef32e3e5ede6ef01304d30