[#1324] services/tree: Implement Object Tree Service

Object Tree Service allows changing trees assotiated with
the container in runtime.

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>

config/example/node.env

@@ -46,6 +46,9 @@ NEOFS_GRPC_1_TLS_ENABLED=false
 NEOFS_CONTROL_AUTHORIZED_KEYS="035839e45d472a3b7769a2a1bd7d54c4ccd4943c3b40f547870e83a8fcbfb3ce11 028f42cfcb74499d7b15b35d9bff260a1c8d27de4f446a627406a382d8961486d6"
 NEOFS_CONTROL_GRPC_ENDPOINT=localhost:8090
 
+# Tree service section
+NEOFS_TREE_GRPC_ENDPOINT=127.0.0.1:8091
+
 # Contracts section
 NEOFS_CONTRACTS_BALANCE=5263abba1abedbf79bb57f3e40b50b4425d2d6cd
 NEOFS_CONTRACTS_CONTAINER=5d084790d7aa36cea7b53fe897380dab11d2cd3c

config/example/node.json

@@ -84,6 +84,11 @@
       "endpoint": "localhost:8090"
     }
   },
+  "tree": {
+    "grpc": {
+      "endpoint": "127.0.0.1:8091"
+    }
+  },
   "contracts": {
     "balance": "5263abba1abedbf79bb57f3e40b50b4425d2d6cd",
     "container": "5d084790d7aa36cea7b53fe897380dab11d2cd3c",

config/example/node.yaml

@@ -66,6 +66,10 @@ control:
   grpc:
     endpoint: localhost:8090  # endpoint that is listened by the Control Service
 
+tree:
+  grpc:
+    endpoint: 127.0.0.1:8091  # endpoint that is listened by the Tree Service
+
 contracts:  # side chain NEOFS contract script hashes; optional, override values retrieved from NNS contract
   balance: 5263abba1abedbf79bb57f3e40b50b4425d2d6cd
   container: 5d084790d7aa36cea7b53fe897380dab11d2cd3c