[#917] controlSvc: Add DetachShards handler

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

pkg/services/control/service.proto

@@ -62,6 +62,9 @@ service ControlService {
 
     // Flush objects from write-cache and move it to degraded read only mode.
     rpc SealWriteCache(SealWriteCacheRequest) returns (SealWriteCacheResponse);
+
+    // DetachShards detaches and closes shards.
+    rpc DetachShards(DetachShardsRequest) returns (DetachShardsResponse);
 }
 
 // Health check request.
@@ -584,3 +587,21 @@ message SealWriteCacheResponse {
 
     Signature signature = 2;
 }
+
+message DetachShardsRequest {
+    message Body {
+        repeated bytes shard_ID = 1;
+    }
+
+    Body body = 1;
+    Signature signature = 2;
+}
+
+message DetachShardsResponse {
+    message Body {
+    }
+
+    Body body = 1;
+
+    Signature signature = 2;
+}