Revert change to confine in filebeat_version

[teancom]

The change in e5ebb2e breaks with the following error:

Error loading fact /var/lib/puppet/lib/facter/filebeat_version.rb: /var/lib/puppet/lib/facter/filebeat_version.rb:3: syntax error,
 unexpected ':', expecting kEND
  confine kernel: %w(Linux Windows)
                 ^
Error loading fact /var/lib/puppet/lib/facter/filebeat_version.rb: /var/lib/puppet/lib/facter/filebeat_version.rb:3: syntax error,
 unexpected ':', expecting kEND
  confine kernel: %w(Linux Windows)

on my machine with ruby 1.8.7, puppet 3.8.7, and facter 2.4.6. By reverting to the previous syntax, it works again. Everything else in the module appears to be compatible with the versions I have installed.

[pcfens]

I cherry picked this in instead of merging here so that I could add a comment that fixes tests.

I'll try and get something pushed to the forge shortly.

[teancom]

Thank you! I really appreciate both the module and how quickly you took care of this (very minor) issue. Cheers!