Bug 5390 - Adding Ipv6 L3ArbitraryBitMask feature support.

Bug 5390 - Adding Ipv6 L3ArbitraryBitMask feature support.

project:- openflowplugin; sub project:- applications

For Stable/Beryllium corresponding patch of subproject
openflowplugin is  https://git.opendaylight.org/gerrit/#/c/41686/

Sample Payload Input:
<ipv6-source-address-no-mask>2070:2070:2001:2001:2001:0471:0471:0471
</ipv6-source-address-no-mask>
<ipv6-source-arbitrary-bitmask>FFFF::0471</ipv6-source-arbitrary-bitmask>
<ipv6-destination-address-no-mask>2001:2001:2001:2001:2001:0471:0471:0471
</ipv6-destination-address-no-mask>
<ipv6-destination-arbitrary-bitmask>FFFF:FFFF::FFFF
</ipv6-destination-arbitrary-bitmask>

Author: Eleftherios Koxias <elkoks@intracom-telecom.com>
Author: Sai MarapaReddy <sai.marapareddy@gmail.com>
Change-Id: I179526fdf8bb1b536f10d851698e1b0a63a70a7d
Signed-off-by: Sai MarapaReddy <sai.marapareddy@gmail.com>