Add network and bluetooth permissions to service template

Add network and bluetooth permissions to service template

Add new public:network and public:bluetooth permissions that currently
drive adding dependencies on network.target and bluetooth.target,
respectively.  This allows related bindings to depend on those to
avoid start up races.  In the future, these permissions could perhaps
be tied to configuring DBus access control of the related services.

Bug-AGL: SPEC-3509

Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: I582691bfe223a01ce80f04a4b0a1463d58287a9c