Support for ubuntu 16.04 and update Java

[timatooth]

I'm currently working on fixing up this module to work again on ubuntu 16.04.

Current issues:

• Init script does not enable (possibly due to whitespace indents on the fields
• module dependency puppetlabs-java is pinned to 0.1.6 which is installing java 6 proposing bumping to >= 1.6.0
• server.properties is being clobbered each time server starts with missing new properties (for Vanilla). I have updated the ERB with missing ones but annoyingly it still gets clobbered because the server seems to always switch around property placement and attach a new timestamp to the top of the file. Might need to update and use something like file_line resources for each property rather than using ERB content.

I have fixed the init stuff and bumped the dependencies to install java 8 and will take a look at sorting out the server.properties issue and maybe flick a PR over soon.