Add support for Cloud Foundry (cf)

[alanyjw]

No description provided.

[gamov]

👍

[pkuczynski]

I will review it tomorrow. Could you in the meantime squash your commits?

[gamov]

Done 😄

[rdubya]

I think this now needs to be Object.const_get

[pkuczynski]

@alanyjw @gamov are you still interested in this PR?

[pkuczynski]

@alanyjw you put a lot of work into this PR, unfortunatelly tests are failing. Do you wanna fix it?

[gamov]

@pkuczynski I'll have a look when I find some time.

[pkuczynski]

Cool thanks!

[pkuczynski]

Here is an overview of what got changed by this pull request:

Issues
======
+ Solved 8
- Added 88
           

Complexity increasing per file
==============================
- lib/config/integrations/helpers/cf_manifest_merger.rb  3
- lib/config/integrations/helpers/helpers.rb  5
         

Complexity decreasing per file
==============================
+ lib/config/integrations/heroku.rb  -2
         

See the complete overview on Codacy

[gamov]

@pkuczynski I tried cloning rubyconfig on my computer and follow the steps in CONTRIBUTING.md but when I run appraisal rspec I get the following error 12x:

>> BUNDLE_GEMFILE=/Users/gamov/Temp/@NoTM/config/gemfiles/rails_4.2.gemfile bundle exec rspec
RUBY_ENGINE: ruby
RUBY_VERSION: 2.6.5


An error occurred while loading ./spec/config_env_spec.rb. - Did you mean?
                    rspec ./spec/config_spec.rb

Failure/Error: require 'bootsnap/setup' # Speed up boot time by caching expensive operations.

LoadError:
  cannot load such file -- bootsnap/setup
# ./spec/app/rails_6.0/config/boot.rb:4:in `require'
# ./spec/app/rails_6.0/config/boot.rb:4:in `<top (required)>'
# ./spec/app/rails_6.0/config/application.rb:1:in `require_relative'
# ./spec/app/rails_6.0/config/application.rb:1:in `<top (required)>'
# ./spec/app/rails_6.0/config/environment.rb:2:in `require_relative'
# ./spec/app/rails_6.0/config/environment.rb:2:in `<top (required)>'
# ./spec/spec_helper.rb:36:in `require'
# ./spec/spec_helper.rb:36:in `<top (required)>'
# ./spec/config_env_spec.rb:1:in `require'
# ./spec/config_env_spec.rb:1:in `<top (required)>'
RUBY_ENGINE: ruby
RUBY_VERSION: 2.6.5

For both this pull request and master. I use RVM and a dedicated gemset. Is there anything that jumps to your mind that I'm doing wrong?
Thanks!

PS: I also did the same thing in a ruby:2.6 container; I've got the exact same result.