[stability] App/service info to be replaced by HTTPS calls to OpenShift

[LiAh Sheep]

Fields like status, git_url, deployment info, etc can be obtained easily by calling various HTTPS APIs to OpenShift.

It should be more consistent and reliable to fetch from HTTPS, instead of we guessing the state from our side. Of course, caching can be done to reduce overhead.

[LiAh Sheep]

This part of service.rb is unnecessary:

  def setup_service_phpmyadmin4
    Core::CommandsWrapper.instance.set_env_var \
      app, "OPENSHIFT_PHPMYADMIN_URL", "#{app.app_url}/phpmyadmin/"
  end

  def cleanup_service_phpmyadmin4
    Core::CommandsWrapper.instance.unset_env_var(app, "OPENSHIFT_PHPMYADMIN_URL")
  end

Because URL can be obtained from API call to "#{app_path}/cartridges/phpmyadmin-4" =>

   "properties"=>
    [{"name"=>"connection_url",
      "type"=>"cart_data",
      "description"=>"phpMyAdmin connection URL",
      "value"=>"https://php01-liahsheep.app.cnpaas.localhost/phpmyadmin/"}],