NEWS: Information about Ixia ANVL testing.

Update the NEWS section with some information about testing.

Signed-off-by: Martino Fornasa <mf@fornasa.it>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>
ovs-vsctl: Update RSTP documentation.

Mention that the AUTO detection of admin point to point MAC parameter
is not implemented.

Signed-off-by: Martino Fornasa <mf@fornasa.it>
Acked-by: Jarno Rajahalme <jrajahalme@nicira.com>