CLOUDSTACK-1643: Don't force load aesni_intel module, fix as per Chiradeep

Signed-off-by: Rohit Yadav <bhaisaab@apache.org>
CLOUDSTACK-1636: Removed the concept of owner region.
Removed region_id from user/account and domain tables.
Removed forwarding of api calls to owner region.
Removed api_key and secret_key from region table.
Included related DB upgrade changes.