CP-12141: Remove all master/slave knowledge from xcp-rrdd
CP-12141: Remove all master/slave knowledge from xcp-rrdd

Added default none to master_address

Signed-off-by: Koushik Chakravarty <134984c61cde17916411a02a5931a2de30237452@citrix.com>

johnelse/xcp-rrdd,djs55/xcp-rrdd,johnelse/xcp-rrdd,djs55/xcp-rrdd