Fix unit tests

[sergiitk]

What's this PR do?

• Fixes missing php.ini in wercker tests by providing defaults from php.ini-development
• Fixes error #79 in Rogue integration storeUserInContest() per discussion with @sbsmith86
• Pins wercker PHP box to 7.1 in order to be more conscious about differences between minor PHP updates

How should this be manually tested?

./vendor/bin/phpunit

Any background context you want to provide?

While investigation #79, I've discovered that running ./vendor/bin/phpunit locally resulted in failure, while wercker pipeline was passing just fine. Then I discovered that wercker was complaining about missing php.ini:

https://app.wercker.com/dosomething/gateway/runs/build/598c7a2dc57cb3000150707f A php.ini file does not exist. You will have to create one.

I added wercker step that installs php.ini (based on 7.1.8 php.ini-development) to /usr/local/etc/php, as recommended in docker php documentation:

We recommend that you add a custom php.ini configuration. COPY it into /usr/local/etc/php by adding one more line to the Dockerfile above and running the same commands to build and run

With php.ini wercker started showing the same errors as local PHPUnit execution.

What are the relevant tickets?

Fixes #79.

[sergiitk]

Was able to reproduce the error on wercker!

[DFurnes]

Such a weird issue! Good investigating @sergii-tkachenko. 👀