Merge "Add note about microversion 2.87 in server rescue help"

Author: Zuul

openstackclient/compute/v2/server.py

@@ -3716,7 +3716,11 @@ def take_action(self, parsed_args):
 
 
 class RescueServer(command.Command):
-    _description = _("Put server in rescue mode")
+    _description = _(
+        "Put server in rescue mode. "
+        "Specify ``--os-compute-api-version 2.87`` or higher to rescue a "
+        "server booted from a volume."
+    )
 
     def get_parser(self, prog_name):
         parser = super(RescueServer, self).get_parser(prog_name)