Rename tls_connection_get_keys() to tls_connection_get_random()

Commit 94f1fe6f6384a2ef379ef5b8cdc32a2fa01f8d13 ('Remove master key
extraction from tls_connection_get_keys()') left only fetching of
server/client random, but did not rename the function and structure to
minimize code changes. The only name is quite confusing, so rename this
through the repository to match the new purpose.

Signed-off-by: Jouni Malinen <j@w1.fi>
11 files changed