Update tests for TLS 1.3 by default

Fix tests that excluded TLS 1.3 cipher suites from the list of suites
expected to be enabled.

Also remove one test that assumed key exchange mechanisms must be part
of the cipher suite names.  TLS 1.3 cipher suites do not include the
key exchange mechanism, which is negotiated separately.

Test: cts -m CtsLibcoreTestCases
Change-Id: I99509c3c813a16b045629acc1c861fa06c077ca8
4 files changed