Fix regexp matching when using API with group/project syntax

Projects can be specified in two ways:

1. Project ID integer (e.g. 142)
2. Project group/name (e.g. group%2Fproject)

Here's the issue: by the time gitlab-workhorse receives the query, the %2F is decoded into a slash, and so gitlab-workhorse sees:

/api/v3/projects/:group_name/:project_name/repository/archive

In 0.4.2, the regex just attempted to match the last part of the URL: repository/archive. In 0.5.0, the anchor ^ forces the API endpoint regexp to match the following form:

/api/v3/projects/:project_id/repository/archive

The extra slash throws the regexp off and causes gitlab-workhorse to forward the request along.

Closes gitlab-org/gitlab-ce#4124

Reassigned to @marin

When can this be merged?

I will assign this to @jacobvosmaer since he is the maintainer and he is back from vacation.

Reassigned to @jacobvosmaer

This sounds vaguely familiar.

This does not sound right, the %2F should not be decoded at the time workhorse decides where to send the URL.

I think we should go with !23 (merged) instead.

Sounds good.

Status changed to closed

mentioned in commit 6b0ce357