Fix Bundler v2 and Puma 5.x issues

[rogerhu]

Description:

Fixing integration tests (spec/integration_spec.rb to work with Ruby 2.6.6)

---

Tasks:

• Bump rspec dependencies to avoid dependency conflicts.
• Upstream URLs are now unescaped (test modified). Somehow this line gets triggered for upstream URLs such as "http://localhost:9042/upstream/http%253A%252F%252F127.0.0.1%253A9043/", which are defined in upstream spec.

I will abide by the code of conduct.

I am still checking to see why the upstream URL exception gets triggered. Somehow there was a change in bundler versions that causes double-url encoding.

With Ruby 2.6.6 (and Bundler v2.2.13):

cd spec/data/bundles/integration_spec/upstream_gems
bundle
Fetching source index from http://localhost:9042/upstream/http%3A%2F%2F127.0.0.1%3A9043/

Retrying fetcher due to error (2/4): Bundler::HTTPError Could not fetch specs from http://localhost:9042/upstream/http%3A%2F%2F127.0.0.1%3A9043/ due to underlying error <Errno::ECONNREFUSED: Failed to open TCP connection to localhost:9042 (Connection refused - connect(2) for "localhost" port 9042) (http://localhost:9042/upstream/http%3A%2F%2F127.0.0.1%3A9043/specs.4.8.gz)>

Retrying fetcher due to error (3/4): Bundler::HTTPError Could not fetch specs from http://localhost:9042/upstream/http%3A%2F%2F127.0.0.1%3A9043/ due to underlying error <Errno::ECONNREFUSED: Failed to open TCP connection to localhost:9042 (Connection refused - connect(2) for "localhost" port 9042) (http://localhost:9042/upstream/http%3A%2F%2F127.0.0.1%3A9043/specs.4.8.gz)>

Retrying fetcher due to error (4/4): Bundler::HTTPError Could not fetch specs from http://localhost:9042/upstream/http%3A%2F%2F127.0.0.1%3A9043/ due to underlying error <Errno::ECONNREFUSED: Failed to open TCP connection to localhost:9042 (Connection refused - connect(2) for "localhost" port 9042) (http://localhost:9042/upstream/http%3A%2F%2F127.0.0.1%3A9043/specs.4.8.gz)>

Could not fetch specs from http://localhost:9042/upstream/http%3A%2F%2F127.0.0.1%3A9043/ due to underlying error <Errno::ECONNREFUSED: Failed to open TCP connection to localhost:9042 (Connection refused -
connect(2) for "localhost" port 9042) (http://localhost:9042/upstream/http%3A%2F%2F127.0.0.1%3A9043/specs.4.8.gz)>

With Ruby 2.5.6 (and Bundler 1.17.2):

rvm use ruby-2.5.6
cd spec/data/bundles/integration_spec/upstream_gems
bundle
Fetching source index from http://localhost:9042/upstream/http%3A%2F%2F127.0.0.1%3A9043/

Retrying fetcher due to error (2/4): Bundler::HTTPError Could not fetch specs from http://localhost:9042/upstream/http%3A%2F%2F127.0.0.1%3A9043/
Retrying fetcher due to error (3/4): Bundler::HTTPError Could not fetch specs from http://localhost:9042/upstream/http%3A%2F%2F127.0.0.1%3A9043/
Retrying fetcher due to error (4/4): Bundler::HTTPError Could not fetch specs from http://localhost:9042/upstream/http%3A%2F%2F127.0.0.1%3A9043/
Could not fetch specs from http://localhost:9042/upstream/http%3A%2F%2F127.0.0.1%3A9043/

Seems to be related to this PR?

[bronzdoc]

@rogerhu could you rebase master and update the PR please? thank you! 🙇

[olleolleolle]

@bronzdoc Perhaps this can be closed now, we are green in CI.