Add default options for guzzle client

[omarlopesino]

Hi.

My use case is this: I need allow unverified https site in tests cause the environment doesn't have certificate.

I tried use key 'defaults' in my behat.yml but I saw this error:

[Symfony\Component\Config\Definition\Exception\InvalidConfigurationException]
Unrecognized option "defaults" under "testwork.web_api"

Here is my behat.yml

default: autoload: '': %paths.base%/tests/behat/bootstrap suites: default: paths:

• %paths.base%/tests/behat/features contexts:
• Behat\WebApiExtension\Context\WebApiContext: extensions: Behat\WebApiExtension\ServiceContainer\WebApiExtension: base_url: 'https://rest-testing.me/' defaults: verify: false ssl.certificate_authority: false

I attach a patch adding defaults key.

Can you review this, please? Thanks!