New methods with nodes

Signed-off-by: Dmitriy Zayakin <d.zayakin@yadro.com>

src/frostfs_testlib/hosting/interfaces.py

@@ -112,6 +112,20 @@ class Host(ABC):
             service_name: Name of the service to restart.
         """
 
+    @abstractmethod
+    def wait_success_suspend_process(self, process_name: str) -> None:
+        """Search for a service ID by its name and stop the process
+        Args:
+            process_name: Name
+        """
+
+    @abstractmethod
+    def wait_success_resume_process(self, process_name: str) -> None:
+        """Search for a service by its ID and start the process
+        Args:
+            process_name: Name
+        """
+
     @abstractmethod
     def delete_storage_node_data(self, service_name: str, cache_only: bool = False) -> None:
         """Erases all data of the storage node with specified name.