Document the Fork to Private Namespace workflow

For external developers, they may not have access right to push branches
into default repositories. We encourage users to fork the repository and
then prepare a merge request.

So updating the documentation accordingly.

Signed-off-by: Ritesh Raj Sarraf <ritesh.sarraf@collabora.com>

content/policies/contribution_process.md

@@ -352,22 +352,19 @@ This guide assumes good working knowledge of git (see
 specific guidelines) and an account with commit rights on GitLab (see
 [Getting commit rights]( {{< ref "#getting-commit-rights" >}} ) for guidance).
 
+## Fork the repository to private namespace
 
-## Branch
+Before commencing any work, the developer should fork the repository into their namespace
+![](/images/gitlab-fork.png)
 
-Propose changes by pushing a git branch to GitLab.
+## Clone
+
+Clone the forked repository
 
 * Check out the git repository:
 ```
 git clone https://gitlab.apertis.org/[group name]/[repository name].git
 ```
-* Create a local branch and make code changes in there. The branch should have
-  the following naming convention: `wip/$username/$feature` or
-  `wip/$username/$taskid`. This branch should be pushed into the destination
-  repository: if developers lack permissions to do so they can ask to be
-  granted the needed privileges on the developer
-  [mailing list](https://lists.apertis.org/) or push to a personal repository
-  instead.
 * Commit the changes (see the
   [guidelines for making commits]( {{< ref "version_control.md#guidelines-for-making-commits" >}} )
   ), test them and check you are allowed to submit them under the project’s
@@ -393,8 +390,6 @@ git commit -i -s
 
 * Once the changes are ready to be reviewed, create a
   [merge request on GitLab](https://docs.gitlab.com/ce/user/project/merge_requests/).
-* The merge request should have the "Remove source branch when merge request
-  accepted" option enabled.
 * If changes are not ready and some (strongly encouraged) early feedback is
   required, the merge request should be
   [marked as Work In Progress (WIP)](https://docs.gitlab.com/ce/user/project/merge_requests/work_in_progress_merge_requests.html).