Checkmk Werk 15460: agent_azure: Fix an error when collecting metrics for Express Route vNet Gateway

ID: 15460 Title: agent_azure: Fix an error when collecting metrics for Express Route vNet Gateway Component: agents Level: 1 Class: Bug fix Version: 2.3.0b1 Previously, the Azure agent would show an error when collecting metrics for the Express Route vNet Gateway: C+: cmk.special_agents.agent_azure.ApiError: Failed to find metric configuration for provider: Microsoft.Network, resource Type: virtualNetworkGateways, metric: P2SConnectionCount, Valid metrics: ExpressRouteGatewayPacketsPerSecond, ExpressRouteGatewayBitsPerSecond, ... C-: The VNet Gateway service wasn't affected by this. Now, the error gets handled by the Azure agent plugin.