Bump version to 2.0.0-RC2
Bump version to 2.0.0-RC2

Signed-off-by: Ivan Kozlovic <a15f8b81a160b4eebe5c84e9e3b65c87b9b2f18e@synadia.com>

wallyqs/gnatsd,apcera/gnatsd,nats-io/gnatsd,nats-io/gnatsd,wallyqs/gnatsd,apcera/gnatsd