(PDK-1442) Add basic interactive pdk bundle test

[rodjek]

Starts an interactive pry session, generates some output and adds an expectation on the contents of the output. It's not the most rspecy test, but we can extract it into a matcher later if we end up creating a lot more of these tests.

[coveralls]

Coverage remained the same at 91.209% when pulling 07e7835 on rodjek:pdk-1442 into 19f5eea on puppetlabs:master.

[scotje]

Seems that Ruby on Windows doesn't include pty as a built-in. There is a gem (rubysl-pty) that I guess re-adds it via native extensions, but it might also be OK to skip this test on Windows? Or is there another way to right it that will be more Windows-native?

[rodjek]

Closing for now, can reopen when we loop back to this later.

[glennsarti]

@rodjek Looks like you need to guard this on platform (Error on Windows)

bundle exec rake %SUITES%
2 processes for 21 specs, ~ 10 specs per process
An error occurred while loading ./spec/acceptance/bundle_spec.rb. - Did you mean?
                    rspec ./spec/acceptance/build_spec.rb
                    rspec ./spec/acceptance/update_spec.rb
                    rspec ./spec/acceptance/new_module_spec.rb
Failure/Error: require 'pty'
LoadError:
  cannot load such file -- pty
  
# ./spec/acceptance/bundle_spec.rb:2:in `require'
# ./spec/acceptance/bundle_spec.rb:2:in `<top (required)>'
Top 0 slowest examples (0 seconds, 0.0% of total time):
Finished in 0 seconds (files took 1.61 seconds to load)
0 examples, 0 failures, 1 error occurred outside of examples
Working in C:/Users/appveyor/AppData/Local/Temp/1/d20191127-1540-teeny3

[glennsarti]

The require statements need guarding on platform