connmgr: Fix packet-in reason for OpenFlow1.3 table-miss flow entries.

As per spec, make packet-in reason for OpenFlow1.3 table-miss flow
entries no_match rather than action.

Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Signed-off-by: Ben Pfaff <blp@nicira.com>
pinsched: Eliminate function callback in interface.

I'm not a fan of function callbacks because I feel that they obscure
interfaces.  This eliminates the function callback used until now in
the pinsched code.

Signed-off-by: Ben Pfaff <blp@nicira.com>