Remove unused swift params from -without-mergepy

Remove unused swift params from -without-mergepy

In doing the Puppet version of the Swift role I noticed
4 parameters which we apply to storage nodes which should
not be required. This patch drops the following parameters
from the swift-storage and swift-storage-puppet nested
stacks which should not be required.

 1) ControllerIP: There is no reason a storage node should need
 the IP address of the controller. The swift proxy would need
 this information in order to be able to contact keystone.
 This swift-proxy is not installed on storage nodes so we can
 drop the parameter here.

 2) NeutronEnableTunnelling: There is no reason for Neutron
 to be installed on Swift storage nodes. No need to create
 an OVS bridge either.

 3) NeutronNetworkType: Similar to above. No neutron requirements
 exist here so this parameter is not required.

 4) Password: This only applies to the the swift-proxy which is
 currently part of our controller role. Storage nodes shouldn't need
 the keystone service-password for any reason.

Change-Id: Icbf05363475c388fc722277da3d3d00a7355b19a