Dashboard should reuse Che Server functionality for devfile v1 overrides

[themr0c]

Following docs at: https://www.eclipse.org/che/docs/che-7/end-user-guide/creating-a-workspace-from-remote-devfile/#overriding-devfile-values-using-factory-parameters_che

I adapted the example to have a clickable example:

https:///f?url=https://github.com/maxandersen/quarkus-quickstarts/tree/che&override.projects.quarkus-quickstarts.source.branch=1.0.x

But the branch was not adapted:

apiVersion: 1.0.0
metadata:
  name: quarkus-quickstarts-spuc5
projects:
  - name: quarkus-quickstarts
    source:
      location: 'https://github.com/maxandersen/quarkus-quickstarts.git'
      type: github
      branch: che

Update:
It's caused by fact that a new Dashboard merge devfile on client side, which does not handle several cases:

• dots in attribute name;
• matching objects in arrays with name/id, like projects..source.branch

[sleshchenko]

Good catch!

It as two issues:

1. New dashboard tries to apply overrides on its side, when it just needs to pass params to Che Server, like
   

2. It's not possible to specify branch with overrides if repo does not have devfile inside Error is thrown when try to specify branch in factory url for repo without devfile #19479