[Jobs] Pass job query string parameter to opt{} instead of static definition

Co-Authored-By: julienroland <roland.julien.perso@gmail.com>

[Jobs] Send job query parameter to opt{} instead of manually appending it to url path in download artifacts file

Added unit test

Added unit test for enviroments and added StopEnvironment function. did small change in issue_test.go

(jobs) support `pipeline` in jobs response

Ref: https://docs.gitlab.com/ce/api/jobs.html#get-a-single-job

Set request.GetBody to fix redirect issues

Gitlab uses the 307 status code to indicate a redirect. Since Go 1.8
that status code is supported by the HTTP package but it requires an
additional field (`GetBody`) to be set to enable resending the body.

Add project level MergeRequest API

Add support to rebase a merge request

Consistently use `SHA`

Improve OrderBy and Sort support for note lists

Merge Request Note Lists and Snippet Note Lists support OrderBy and
Sort options, like Issue Note Lists.

handle paginated results that are only one page

* Update event_types.go

* Update event_types.go

After having another look, this seemed more consistent with other method
names used in this package.

* fix godoc for RepositoriesService.RawFileContent

* rename RepositoriesService.RawFileContent to RepositoriesService.GetBlob

* add public_jobs setting to CreateProject

* fix json field name

* rename PublicJobs to PublicBuilds

* Fix #516.

* Order the fields of GroupMember to match the GitLab docs.

Signed-off-by: Sune Keller <absukl@almbrand.dk>

* Add ParseWebhook function to automatically parse events from webhook requests

* Add tests

* Use constants over strings for webhook struct types

* Re-export WebhookEventType method; add test

* add HEAD get file metadata

* add new endpoint HEAD GetFileMetaData