Previously all remote IPs appeared at 127.0.0.1, which made Akismet
not very useful. Using the ActionDispatch Remote IP (http://api.rubyonrails.org/classes/ActionDispatch/RemoteIp.html)
should provide more reliable results.

Closes #16629

These changes were pulled from GitLab EE to support configuring
an alternative API URL than the default https://api.github.com.
In addition, the `verify_ssl` flag allows users to disable SSL cert
checking.

One modification: add a default `args` option if it does not exist
to avoid breaking existing configurations.

This makes the memory killer behave more like 'sidekiqctl stop'.

This reverts commit 0f309794, reversing
changes made to 1e596fef.

Merely setting the "action" tag will only result in the transaction
itself containing a value for this tag. To ensure other metrics also
contain this tag we must set the action using Transaction#action=
instead.

This allows users to configure the number of points stored in a single
UDP packet. This in turn can be used to reduce the number of UDP packets
being sent at the cost of these packets being somewhat larger.

The default setting is 1 point per packet so nothing changes for
existing users.

Code is based on Project Webhooks, removing deprecations and without
commits listing.

With these changes we don’t lost the issue/pr references when importing
them to GitLab.

Fixes gitlab-org/gitlab-ce#15335

By using Module#prepend we can define a Module containing all proxy
methods. This removes the need for setting up crazy method alias chains
and in turn prevents us from having to deal with all that madness (e.g.
methods calling each other recursively).

Fixes gitlab-org/gitlab-ce#15281

Signed-off-by: NRémy Coutable <remy@rymai.me>

Closes #14370

Move gon function into its own helper

Signed-off-by: NRémy Coutable <remy@rymai.me>