AJCORE-914: Provide alternate AllJoyn config package

Add a new, alternate config file that gets written to
/etc/config/alljoyn to support non-Gateway device that do not have any
network interfaces connected to insecure networks such as the
Internet.

Change-Id: Ib42d61b3c23aef347758c3e09829731ce11591af
Signed-off-by: Steve Kinneberg <stevek@qce.qualcomm.com>