Add support for consumer/provider names with a space.

[siad007]

As in the given snipped, it is not easy to pass a valid consumer/provider name with a space.
For example --consumer=Foo Bar is not possible:

pact-php/src/PhpPact/Standalone/MockService/MockServer.php

Lines 108 to 109 in 3a29da6

	$results[] = "--consumer={$this->config->getConsumer()}";
	$results[] = "--provider={$this->config->getProvider()}";

Before encoding it by hand or with rawurlencode, to convert the spaces to %20, we should consider to rawurlencode or maybe better escapeshellarg ❓ it right at that place.

What do you think?

[bethesque]

escapeshellarg. Don't URL encode it - that's the job of the underlying HTTP client.