Revert "icinga2x-graylog2: Make API browser work by listening on all interfaces."

This reverts commit 56ec83aa324061eb90dcca31137a0e5c93ee86d0.

It caused timeouts in graylog2-web in some network setups.
icinga2x-graylog2: Use version 1.2 of the check-graylog2-stream package.
icinga2x-graylog2: Update to graylog2 Puppet module 0.8.0.

This allows us to use the "timeout" option for the web interface.
icinga2x-graylog2: Increase timeout for web interface.

This avoids timeout errors which might happen from time to time.
icinga2x-graylog2: Switch graylog2-server API url back to ipaddress.

The rest_listen_uri commit got reverted so this is needed again.
icinga2x-graylog2: Use a wrapper script for the check-graylog2-stream check.

The stream id is different on each Vagrant bootstrap. The script fetches
the first stream id and executes the check-graylog2-stream check against
that stream.
icinga2x-graylog2: Get ipaddress via facter instead of hardcoding localhost.
icinga2x-graylog2: Move finalize script and adjust output.
icinga2x-graylog2: Use the ruby seed script and remove the old one.
icinga2x-graylog2: Fix Graylog2 documentation link.
Merge remote-tracking branch 'bernd/graylog2'