test: add test cases for cluster profiling

Add test cases for cluster fork method with --prof and --logfile arguments.

Refs: https://coverage.nodejs.org/coverage-a388f4d13aa29ddb/lib/internal/cluster/master.js.html#L64

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• tests and/or benchmarks are included
• documentation is changed or added
• commit message follows commit guidelines