Add GnuTLS interop for CCM(-8) ciphersuites
Add GnuTLS interop for CCM(-8) ciphersuites

I'm going to touch the GCM/CCM/CCM-8 code in the next commit, and so far we
didn't have any interop testing for CCM/CCM-8.

Our standard development/testing environment currently has GnuTLS 3.4.10, and
fortunately support for CCM/CCM-8 was introduced in GnuTLS 3.4.0

Support in OpenSSL was introduced in 1.1.0 which is not yet the default
version in the CI.

NXPmicro/mbedtls,Mbed-TLS/mbedtls,Mbed-TLS/mbedtls,ARMmbed/mbedtls,ARMmbed/mbedtls,Mbed-TLS/mbedtls,NXPmicro/mbedtls,ARMmbed/mbedtls,ARMmbed/mbedtls,Mbed-TLS/mbedtls,NXPmicro/mbedtls,NXPmicro/mbedtls