KTLS: disable ktls_keyupdate & tls1.2 chachapoly tests
There seems to be a kernel specific issues with CHACHA20-POLY1305 for
TLS 1.2 [1]
The test fails without a needed kernel patch
[1] https://gitlab.com/gnutls/gnutls/-/issues/1443
Signed-off-by: Frantisek Krenzelok <krenzelok.frantisek@gmail.com>