Added files hash argument to init.pp

[jskarpe]

Following a pattern to allow for The Foreman to configure all aspects of this module requires all parameters to be available through class definitions.

[elasticsearch-release]

Jenkins standing by to test this. If you aren't a maintainer, you can ignore this comment. Someone with commit access, please review this and clear it for Jenkins to run; then say 'jenkins, test it'.

[jskarpe]

Seems Travis CI fails due to:

Retrying git clone 'git@github.com:puppetlabs/beaker.git' "/home/travis/.rvm/gems/ruby-1.8.7-p374/cache/bundler/git/beaker-18670cc1b84a185c2066a67869906a4430a4c4a8" --bare --no-hardlinks --quiet due to error (2/4): Bundler::Source::Git::GitCommandError Git error: command git clone 'git@github.com:puppetlabs/beaker.git' "/home/travis/.rvm/gems/ruby-1.8.7-p374/cache/bundler/git/beaker-18670cc1b84a185c2066a67869906a4430a4c4a8" --bare --no-hardlinks --quiet in directory /home/travis/build/elastic/puppet-logstashforwarder has failed.

Permission denied (publickey).

fatal: Could not read from remote repository.

[ozbillwang]

@oloc has reported the problem in #58

[elasticsearch-release]

Can one of the admins verify this patch?

[jskarpe]

Is there something wrong with this patch since it's not merged?