Medium: IPaddr2 findif: accept dotted quad netmask

Accept, and noisily, but implicitly, convert a "cidr_netmask" parameter
that is specified as dotted quad.
Some people still do that, despite the name of the parameter.

And some previous versions of the IPaddr2 resource agent, or probably
rather the then used findif binary, accepted and converted it.
fix for missing lxc-ps command in ocf:heartbeat:lxc

since beginning of 2014 the lxc-ps command isn't available anymore
(see:
 https://lists.linuxcontainers.org/pipermail/lxc-devel/2014-January/007433.html)
so it is using now lxc-info to determine the PID of a container and "ps"
to get the command name of it.
remove check for unused binary
re-add LXCpre1.0 logic

now the old behavior should still work if LXC in a version prior 1.0.0
is used
Merge pull request #519 from Savar/fix_ocf_heartbeat_lxc

fix for missing lxc-ps/lxc-version command in ocf:heartbeat:lxc with LXC >= 1.0.0
Merge pull request #516 from lge/rcf-findif-accept-dotted-quad-convert-to-cidr

Medium: IPaddr2 findif: accept dotted quad netmask