nginx: forward /yang and /.well-known as well to restconf agent

We skip /telemetry/optics for now since we don't support any telementry atm.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

board/common/rootfs/etc/nginx/restconf.app

@@ -1,4 +1,5 @@
-location /restconf/ {
+# /telemetry/optics is for streaming (not used atm)
+location ~ ^/(restconf|yang|.well-known)/ {
     grpc_pass grpc://[::1]:10080;
     grpc_set_header Host $host;
     grpc_set_header X-Real-IP $remote_addr;