ACL Rules - Allow IP and both source/target CIDR

Changes to allow the use of IP as a protocol (will be changed again in
2013.02 core) and also to allow use of CIDR for destination as well as
source.
Removed local caching

Removed local caching of networks as it was causing discovery problems
(datacenter caching still in place).
Fix for alterVM and specification of Platform

Bugs fixed in the use of the delta when adding more storage to a VM and
in how Platform and Architecture were being parsed and recorded.