Low: IPaddr2: support nic:iflabel format in nic parameter

This format is deprecated but supported for the backward compatibility.
Dev: IPaddr2: add ocft test cases for iflabel
Dev: mysql-proxy: update the ocft script to run on the latest ocft tools.
Merge pull request #202 from kskmori/mysql-proxy-ocft-var

Dev: mysql-proxy: update the ocft script to run on the latest ocft tools
Merge pull request #201 from kskmori/IPaddr2-iflabel-in-nic

Low: IPaddr2: support nic:iflabel format in nic parameter
Low: VirtualDomain: allow for custom migrateport
Low: VirtualDomain: Fix misleading metadata default
Merge pull request #204 from kleind/master

Low: Virtualdomain: allow for custom migrateport
Dev: ocf-shellfuncs: use $HA_VARLIB as default destination for trace files

$HA_VARRUN (/var/run) will be cleaned on most platforms after
reboot. The trace file could be needed for examination between
reboots.
build: update ChangeLog for release 3.9.5