Replace deprecated URI.encode with CGI.escape

[jasonheecs]

URI.escape and URI.encode are deprecated, this PR replaces the URI.encode method call with CGI.escape

[clintoncwolfe]

My team is looking for this as well, as this is very noisy under ruby 2.7.

[tas50]

@tlunter any chance we could get a release with this fix pushed to Rubygems. This is going to cause a lot of issues for anyone going to Ruby 2.7.

[ypal]

👍 on this, upgrading to ruby 2.7 made the output VERY noisy

[tas50]

For anyone running into this our fork here has all the URI -> CGI fixes. There's more than just this one:https://github.com/chef/docker-api

[tlunter]

@jasonheecs can we replace all URI.encode calls rather than just one?

[tlunter]

Actually, it seems like you can't just find and replace since URI.encode won't encode characters like / and : but CGI.escape does. The remaining URI method encode_www_form_component mirrors CGI.escape. The daemons that I tested against on travis seem to not like those characters being encoded like that.

[hezanathos]

Does it ? It looks like travis failed for a different reason. And it succeded for several ruby versions.

ERROR:  Error installing bundler:

	The last version of bundler (>= 0) to support your Ruby & RubyGems was 1.17.3. Try installing it with `gem install bundler -v 1.17.3`

	bundler requires Ruby version >= 2.3.0. The current ruby version is 2.2.0.

The command "gem install bundler" failed and exited with 1 during .

[tlunter]

@hezanathos this was on a branch where I replaced all occurrences and not just the one in this PR and adjusted the .travis.yml file to test relevant versions of ruby instead of the current ones which are out of date.

[tlunter]

Hey folks, I have merged this in and released as 2.0.0.pre.1. Let me know if you see any issues. Thanks @jasonheecs.