Update Samsung Print Recommendation Plugin (to support Mopria printers)

- Extract common part of MDNSFilterPlugin to common utils, MDNSFilteredDiscovery.java (other vendors can use it too)
- Refactor Samsung Print Recomendation Plugin to use MDNSFilteredDiscovery.java
- Add Mopria devices detection to Samsung Print Recomendation Plugin

*Samsung Print Service Plugin supports Mopria printers since v3.00.161011.

Test: Tested manually. Test app was developed to make sure that Samsung Print Recommendation plugin can find both Samsung and Mopria devices. Additionally MDNSFilterPlugin was tested on HP printers.
Change-Id: Idc0d311171495f879564336370a86f7a8890378b