Properly detect OmniOS. Refs #144

```
 *  INFO: sh bs.sh -- Version 1.5.5
 *  WARN: Running the unstable version of bootstrap-salt.sh

 *  INFO: System Information:
 *  INFO:   CPU:          GenuineIntel
 *  INFO:   CPU Arch:     i86pc
 *  INFO:   OS Name:      SunOS
 *  INFO:   OS Version:   5.11
 *  INFO:   Distribution: OmniOS r151006

 *  INFO: Installing minion
 * DEBUG: install_omnios_stable_deps not found....
 * DEBUG: install_omnios_deps not found....
 * DEBUG: install_omnios_stable not found....
 * DEBUG: install_omnios_stable_post not found....
 * DEBUG: install_omnios_post not found....
 * DEBUG: install_omnios_stable_restart_daemons not found....
 * DEBUG: install_omnios_restart_daemons not found....
 * DEBUG: daemons_running_omnios_stable not found....
 * DEBUG: daemons_running_omnios not found....
 *  INFO: Found function daemons_running
 * ERROR: No dependencies installation function found. Exiting...
 * DEBUG: Removing the logging pipe /tmp/bootstrap-salt.logpipe
```

All we need now is someone to add the install functions :)

*hint hint* @robinsmidsrod.... :smiley: