This reverts commit 0340f42d.

Closes #2553

Adds functionality to force rebase a PR if the label "rebase" is added. Also, the label is configurable via a new `rebaseLabel` config option.

Closes #1406 

Renames `endpoints` to `hostRules`

Include body, message and stack with every error if present

Ignore archived GitLab repositories.

Closes #2437

GitLab's API for closing issue is to send a PUT request with `state_event` set to `close`.

Reference: https://docs.gitlab.com/ce/api/issues.html#edit-issue

Fixes #2317

Pushes “getPrBody” logic into platform level to allow platforms to individually do things like text replacements and body length limiting.

Closes #2267

Delete cached issueList after creating any new issue, so that we don’t end up with “old” state and potentially create duplicate issues.

This reverts commit 04e0ca1f.

Refactors credentials/token handling to rely less on env variables and instead use an endpoints middleware for credentials handling.

First step towards #2105

Closes #2200

Fixes call to Gitlab API.
Settings require direct path to API, the fixed string doubled it

Refactors platforms to take the admin-only `gitAuthor` and `gitPrivateKey` values during repository initialisation instead of during file commits.

fix: Shortened the URLs in the GitLab wrapper

For very large repositories, recursing through the entire repo can be very time consuming. Bot admins can now disable file list recursion by setting the env `RENOVATE_DISABLE_FILE_RECURSION=true`. Then only files within the root directory of repositories will be found.

Closes #2172

This PR adds issue handling functions to the GitLab platform. The implemented functions are `getIssueList`, `ensureIssue` and `ensureIssueClosing` (migrated from GitHub).

Closes #1587 

This PR integrates the `getPrFiles` function into the GitLab's wrapper.

Adds a series of functions related to the commenting aspect of GitLab for the API wrapper. These functions are: `getComments`, `addComment`, `editComment`, `deleteComment`, `ensureComment` and `ensureCommentRemoval`. 

Closes #1764 

Fixed the 404 error on branch rebasing. (GitLab)

Closes #1992 

This reverts commit 09978ae8.

Added permission checking on `initRepo` which, in case of an error, throws a clear message (`The token doesn't have the write permissions to the repository`)

Closes #509 

Closes #1626

GitLab as of v10.6 has a API end point for Merge Request Approvals
which equates to the Reviewer functionality in GitHub.  This is available
to both GitLab.com and EES or above on-prem users.

See https://docs.gitlab.com/ee/api/merge_request_approvals.html#merge-request-level-approvals



Signed-off-by: Adam Moss <adam.moss@bcs.org.uk>