Update solarisips.py
Update solarisips.py

- Change the virtual name and environment checking to make IPS the default pkg provider for Solaris 11 (SVR4 Packaging is deprecated)
- Modify list_upgrades function to properly use switches rather than piping through external commands for a more efficient result.
saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt