Added sudo parameter for getting shell with elevated rights or not

src/frostfs_testlib/hosting/interfaces.py

@@ -65,9 +65,12 @@ class Host(ABC):
         return cli_config
 
     @abstractmethod
-    def get_shell(self) -> Shell:
+    def get_shell(self, sudo: bool = True) -> Shell:
         """Returns shell to this host.
 
+        Args:
+            sudo: if True, run all commands in shell with elevated rights
+
         Returns:
             Shell that executes commands on this host.
         """