Bug 222: Added basic Restconf operational statistics
Added basic restconf statistics which counts
incoming requests and exported it via Config subsystem.
Export via config subsystem provides this
statistics via JMX and Netconf. In distribution, where
sal-netconf-connector is present and 99-sal-netconf-connector.xml is enabled,
Restconf statistics are also available via
restconf/operational/opendaylight-inventory:nodes/node/controller-config/yang-ext:mount/config:modules/module/rest-connector-default-impl
Change-Id: Ibd0fb6875104d1a90eeaf62271c9a2f87d2f85f0
Signed-off-by: Tony Tkacik <ttkacik@cisco.com>