Disable TLS 1.0 and TLS 1.1 in libssl

Their time has long since past, and they should not be used.
This change restricts ssl to versions 1.2 and 1.3, and changes
the regression tests to understand w

Disable TLS 1.0 and TLS 1.1 in libssl

Their time has long since past, and they should not be used.
This change restricts ssl to versions 1.2 and 1.3, and changes
the regression tests to understand we no longer speak the legacy
protocols.

For the moment the magical "golden" byte for byte comparison
tests of raw handshake values are disabled util jsing fixes them.

ok jsing@ tb@

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Add a regress test for TLS client/server.

This currently exercises various combinations of TLS versions and their
associated key exchange mechanisms. Note that this currently fails for
TLSv1.0/TLSv1

Add a regress test for TLS client/server.

This currently exercises various combinations of TLS versions and their
associated key exchange mechanisms. Note that this currently fails for
TLSv1.0/TLSv1.1 with RSA KEX (to be fixed shortly).

Over time all of the ssl regress should be moved into the dtls and tls
regress tests.

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