Test fails to parse JSON in PHP7

[thomaslorentsen]

When testing domains, the JSON strings fails to be decoded in PHP7

1) RoundPartner\Test\Unit\Domain\DomainTest::testUpdateSubDomain with data set #0 ('[{\n  "nameservers" : [ {\n    ....."\n}]', 200)
OpenCloud\Common\Exceptions\JsonError: Syntax error
/home/travis/build/roundpartner/cloud/vendor/rackspace/php-opencloud/lib/OpenCloud/Common/Http/Message/Formatter.php:48
/home/travis/build/roundpartner/cloud/vendor/rackspace/php-opencloud/lib/OpenCloud/Common/Http/Message/Formatter.php:32
/home/travis/build/roundpartner/cloud/vendor/rackspace/php-opencloud/lib/OpenCloud/DNS/Resource/AbstractResource.php:37
/home/travis/build/roundpartner/cloud/src/Domain/Domain.php:85
/home/travis/build/roundpartner/cloud/src/Domain/Domain.php:71
/home/travis/build/roundpartner/cloud/src/Domain/Domain.php:59
/home/travis/build/roundpartner/cloud/tests/Unit/DNS/DomainTest.php:63

[thomaslorentsen]

Fixed by rackspace/php-opencloud#712