Update regex to detect ip alias in OpenBSD.
Update regex to detect ip alias in OpenBSD.

As suggested by @iMilnb regex updated. The other way around is fix this would be
to use the same approach as for Solaris systems adding a elif statement when system
is OpenBSD.

Fixes #29833.

saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt