Fix simplecov and Code Climate Test Reporter

[cassianoblonski]

What github issue is this PR for, if any?

Resolves #1040

What changed, and why?

Simplecov version, after some time searching and looking at the errors and logs on Travis and checking the configuration for the test reporter I found a problem with simplecov 0.18+ and CodeClimate Test Reporter, some changes in simplecov 0.18 are not compatible with the actual CodeClimate Test Reporter, to make it work together I fixed the version of simplecov to 0.17.1, as stated on the issue codeclimate/test-reporter#418 CodeClimate core team is trying to work with simplecov to make 0.18 compatible with test reporter.

What is still needed?

I need someone with permission to edit the settings on this repo to add an env var called CC_TEST_REPORTER_ID with the CodeClimamte Test Reporter ID, that can be achieved similar to the example below:

Screenshots please :)

note that I tested the screenshots below with the current CC_TEST_REPORTER_ID on the travis.yml, we need to check if this ID is the correct one and add it to the repo env var on Repo Settings as stated above.

before:

after:

at the moment, waiting for the repo env var:

[cassianoblonski]

@compwron can you edit the Repo Settings and add the env var listed on the description or ask someone with the permissions to do this.

[compwron]

:)

[compwron]

[compwron]

thanks!