Initial support for metrics

Signed-off-by: nscavell <nick.scavelli@gmail.com>
Add handler count for each address

Signed-off-by: nscavell <nick.scavelli@gmail.com>
Fork JmxReporter to exclude slf4j depdenency

Signed-off-by: nscavell <nick.scavelli@gmail.com>
Update event bus metric names

Signed-off-by: nscavell <nick.scavelli@gmail.com>
Add isEnabled check for HttpClientMetrics

Signed-off-by: nscavell <nick.scavelli@gmail.com>