PactLogDir ignored in types.VerifyRequest

[SergeyRadist]

Software versions

• OS: e.g. Mac OSX 10.11.5
• Consumer Pact library: e.g. Pact go v1.5.1
• Provider Pact library: e.g. pact-jvm-provider-maven_2.11 v 3.3.8
• Golang Version: go version
• Golang environment: Provide output of go env

Expected behaviour

	_, err := pact.VerifyProvider(t, types.VerifyRequest{
		PactLogDir: "/tmp/logs",
		PactLogLevel: "INFO",
	})

will cause writing logs in /tmp/logs with info level

Actual behaviour

logs written in default path

Steps to reproduce

use types.VerifyRequest

[SergeyRadist]

Could I make pr ?

[mefellows]

Ah, good spot. Just added the fix now and pushed to master.