Add benchmark for SSLServerSocket creation

Change-Id: Ifb05ee34f4398ad61e047d1a7ecfcea9a787b6ca
Remove BC workaround in TestKeyStore

At one point in time, BC had a bug where it couldn't work with other EC
keys. This has since been fixed, so this workaround is no longer needed.

Change-Id: I0fb3f4d207fb5093e3bd1e1256cc3e165ecae8b0