tst_qsslcipher was quite useless - now we test that default constructed
QSslCipher reports expected values. Test the non-default from the
different auto-test, where we are sure we have really useful
ciphersuites (with different parameters obtained from a TLS backend,
where it's possible).
Pick-to: 6.0
Pick-to: 5.15
Change-Id: Iff14a0580fed889cf9e0873bee01d968773626db
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>