LU-10391 socklnd: convert ksocknal_add_peer to take sockaddr

LU-10391 socklnd: convert ksocknal_add_peer to take sockaddr

ksocknal_add_peer() now takes a 'struct sockaddr' which is currently
always an IPv4 address.  ksocknal_lauch_packet() is the main place
where the nid is converted to an IP address.

Signed-off-by: Mr NeilBrown <neilb@suse.de>
Change-Id: I194248662798542096e5cc9af985e6c0063a038a
Reviewed-on: https://review.whamcloud.com/38408
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Aurelien Degremont <degremoa@amazon.com>
Reviewed-by: Chris Horn <chris.horn@hpe.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Oleg Drokin <green@whamcloud.com>