We are using hash[symbol][symbol] everywhere else in the test file.

In https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/21595
`ContinueParams` was introducted in the `Projects::JobController#cancel`
since `continue` parameter is not present for in `cancel_path` for
`Projects::JobController#show.sjon` the user is being redirect to the
pipeline page, where it should be redirected to the current job page
instead.

Add the `continue` parameter as a query string for `cancel_path`.

This was added because we thought we'd need
to render the environment status but we
already have this information in the
build status

closes https://gitlab.com/gitlab-org/gitlab-ce/issues/51925

closes https://gitlab.com/gitlab-org/gitlab-ce/issues/51093

closes https://gitlab.com/gitlab-org/gitlab-ce/issues/50460

Create new entity called TriggerVariablesEnitity for trigger variables,
to aid reuseablity in the future.

Update JSON schema to include trigger information in the response.

Refactor rspec tests a bit to reduce duplication and for the `context`
to make sense.

closes https://gitlab.com/gitlab-org/gitlab-ce/issues/50989

closes gitlab-org/gitlab-ce#51225

closes #51117

Start validating against the exciting JSON schema for the job controller JSON
response.

The JSON schema is not complete since there is quite a lot missing, this will
be done in a separate issue.

gitlab-org/gitlab-ce#50101

Previously we would pull the file, now, we just stream-it as needed from Object Storage

the ci status icons are generated client side, wo we don't need the
static files anymore.

In Rails 5.0 `response.content_type` does not return charset which is expected in specs.
This commit replaces `response.content_type` with `response.headers["Content-Type"]` in specs.

'No job log' message is no longer necessary since we returned an image
when a build does not have a trace. See
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/18278 for more
details

Closes #45625

EE: Trace as artifacts (FileStorage and ObjectStorage)

Closes #4171

See merge request gitlab-org/gitlab-ee!4258