add consul health check scripts, working on RHEL 7

[TheLastChosenOne]

but should work on other Linux Distributions too
add support for OracleLinux which is basically a RedHat/CentOS

[bbaassssiiee]

Please rebase to resolve the conflicts in your branch.

[TheLastChosenOne]

Hope it's ok now - created this branch over a year ago.

dbda26d

[lanefu]

I don't think health checks configuration is appropriate for this role. That's an implementation detail that should be up to the end-user in another playbook or role.

[lanefu]

@TheLastChosenOne

Your efforts are very much appreciated. Unfortunately this change is a bad fit for the role. (see #183 (review)).