Pact Foundation

<https://github.com/pact-foundation/pact-php/pull/322|#322 MockServerConfig defaults and pact-php speed enhancements>
Pull request opened by <https://github.com/YOU54F|YOU54F>
continuation of <https://github.com/slt|@slt>'s changes in <https://github.com/pact-foundation/pact-php/pull/316|#316> and <https://github.com/pact-foundation/pact-php/pull/315|#315> with appropriate commit messages.
<https://github.com/pact-foundation/pact-php|pact-foundation/pact-php>
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<https://github.com/pact-foundation/pact-php/pull/322|#322 MockServerConfig defaults and pact-php speed enhancements>
Pull request merged by <https://github.com/YOU54F|YOU54F>
<https://github.com/pact-foundation/pact-php|pact-foundation/pact-php>