Remove Splunk Log forwarding from GOV.UK
Remove Splunk Log forwarding from GOV.UK

We no longer need splunk and this PR begins the removal process of
splunk from our systems. Splunk was installed as a test and is no
longer needed.

This will be a two phased release:
Release 1: Release this PR which will remove all the splunk stuff from
the servers
Release 2: A second govuk-puppet PR which will delete this module, which
can then be deployed at the same time as the removal of the secrets in
this PR: alphagov/govuk-secrets#1191

Pair: 5fb1e271b5d6bac0653534752fc8ecdc2d416ce2@fredericfran-gds

alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet