Testsuite: switch ciphersuite use This is to accomodate RHEL 7, where openssl seems to not support ECDHE Kx + CAMELIA nor any of the CHACHA20s, but does support DHE Kx + CAMELIA. All we really wanted was something distinguishable from default (which is commonly ECDHE-RSA-AUE256-GCM-SHA).