refactor(gns3server,tests): StrEnum, ASYNC109 and others

gns3server/controller/gns3vm/virtualbox_gns3_vm.py

@@ -43,7 +43,7 @@ class VirtualBoxGNS3VM(BaseGNS3VM):
         self._system_properties = {}
         self._virtualbox_manager = VirtualBox()
 
-    async def _execute(self, subcommand, args, timeout=60):
+    async def _execute(self, subcommand, args, timeout=60):  # noqa: ASYNC109 - operation-specific timeout is intentional
 
         try:
             result = await self._virtualbox_manager.execute(subcommand, args, timeout)

gns3server/controller/gns3vm/vmware_gns3_vm.py

@@ -41,7 +41,7 @@ class VMwareGNS3VM(BaseGNS3VM):
     def vmx_path(self):
         return self._vmx_path
 
-    async def _execute(self, subcommand, args, timeout=60, log_level=logging.INFO):
+    async def _execute(self, subcommand, args, timeout=60, log_level=logging.INFO):  # noqa: ASYNC109 - operation-specific timeout is intentional
 
         try:
             result = await self._vmware_manager.execute(subcommand, args, timeout, log_level=log_level)