[11.9] Revert "Remove HipChat integration from GitLab"

See merge request gitlab-org/gitlab-ce!27257

Fixes gitlab-org/gitlab-ce#42595

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

It also renames the API::PROJECT_ENDPOINT_REQUIREMENTS constant to
API::NAMESPACE_OR_PROJECT_REQUIREMENTS

This whitelists all existing offenses for the various CodeReuse cops, of
which most are triggered by the CodeReuse/ActiveRecord cop.

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

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

Merge branch 'security-10-3-do-not-expose-passwords-or-tokens-in-service-integrations-api' into 'security-10-3'

Filter out sensitive fields from the project services API

See merge request gitlab/gitlabhq!2281

(cherry picked from commit 476f2576444632f2a9a61b4cead9c1077f2c81d7)

2bcbbda0 Filter out sensitive fields from the project services API

+ Add support for the new separate channel and events settings
* Dry up chat notifications in the service properties definitions

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/27070

Deprecate "chat commands" in favor of "slash commands"

We looked for things like:

 - `slash commmand`
 - `slash_command`
 - `slash-command`
 - `SlashCommand`

Use the EnforcedStyleForMultiline: no_comma option.

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

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

MR: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/9250/

See https://gitlab.com/madlittlemods/gl-mock-ci-service

When the trigger endpoint is called, it has to find the right service
for the given project. However, the old implementation did much more.

For example, it build a list of the missing services on this project.
This whole process took about 750ms _each time_. The current
implementation is expected to perform 10x better, as it only searches in
the current projects services. Given the service has to be configured
anyway, this can be done.