Go 1.13 flipped TLS 1.3 to opt-out instead of opt-in, and its TLS 1.3 support does not allow configuring cipher suites. Simply remove the affected test; it's not relevant going forward and there's ample evidence it works properly prior to Go 1.13.
* Add join test * Add configuration test * Add remove peer test * Test join with and without client certs
* Move tls config creation to tlsutil * Update sdk/helper/tlsutil/tlsutil.go Co-Authored-By: Jim Kalafut <jim@kalafut.net> * address review comments
