ovs-ofctl: Fix OpenFlow versions with '--bundle'

ovs-ofctl: Fix OpenFlow versions with '--bundle'

While the presence of the '--bundle' option implicitly added the
OpenFlow 1.4 to the allowed protocols, it failed to remove OpenFlow
1.0 from the allowed protocols.  This is changed so that '--bundle'
option now also implicitly removes versions lesser than 1.4 from the
allowed protocols.  This has no behavioral difference when ovs-ofctl
is paired with OVS that supports OpenFlow 1.4, as the greatest common
version is negotiated, but prevents negotiation of OpenFlow 1.0 when
OVS does not support OpenFlow 1.4.

Found by inspection.

Signed-off-by: Jarno Rajahalme <jrajahalme@nicira.com>
Acked-by: YAMAMOTO Takashi <yamamoto@midokura.com>