Fixed most reported issues and general improvements

ACL model now references SFP name
Modified Data Plane Locator group and used within SF, SFF and SF dictionary
Added trasnport type to Data Plane locator group
Added more necessary information to SFF OVS model
SFP model has service index for each SF and consequently we populate
  SI for each SF
Modified ACL model by inserting a list under top container
Modified original configuration files accordingly
Added newer ietf-yang-types dependency to POM
Modified Log configuration from DEBUG to ERROR
Modified SF model to indicate whether SF is nsh-aware

Change-Id: Ifcf83e0841bea7624a5d9e52e866f26abb6c21d1
Signed-off-by: Reinaldo Penno <rapenno@gmail.com>