global: pom.xml clenup, maven metadata fixes

Signed-off-by: Ketoth Xupack <ketoth.xupack@gmail.com>
java-toolkit: github site deploy support

Signed-off-by: Ketoth Xupack <ketoth.xupack@gmail.com>
protobuf-rpc: reconnection

Signed-off-by: Ketoth Xupack <ketoth.xupack@gmail.com>