PATCH merge operation does nothing

This is a Beryllium bug, similar to NETCONF-185. Here is what happens when launching curl commands from Bash (ODL has odl-restconf and odl-clustering-test-app features installed).

$ curl -u'admin:admin' -X PATCH -H "Content-Type:application/yang.patch+json" -d '{"ietf-restconf:yang-patch":{"patch-id":"0","edit":[{"edit-id":"0","operation":"replace","target":"/car:car-entry[car:id='"'"'0'"'"']","value":{"car:car-entry":[

{"id":"0"}

]}}]}' 127.0.0.1:8181/restconf/config/car:cars ;echo

{"ietf-yang-patch:yang-patch-status":{"patch-id":"0","ok":null}}

$ curl -u'admin:admin' 127.0.0.1:8181/restconf/config/car:cars ;echo

{"cars":{"car-entry":[

{"id":"0"}

]}}

$ curl -u'admin:admin' -X PATCH -H "Content-Type:application/yang.patch+json" -d '{"ietf-restconf:yang-patch":{"patch-id":"0","edit":[{"edit-id":"0","operation":"merge","target":"/car:car-entry[car:id='"'"'1'"'"']","value":{"car:car-entry":[

{"id":"1"}

]}}]}' 127.0.0.1:8181/restconf/config/car:cars ;echo

{"ietf-yang-patch:yang-patch-status":{"patch-id":"0","ok":null}}

$ curl -u'admin:admin' 127.0.0.1:8181/restconf/config/car:cars ;echo

{"cars":{"car-entry":[

{"id":"0"}

]}}

I was expecting both

{"id":"1"}

and

{"id":"0"}

entries to be present in the final GET response.