fix(cluster): increase timeout

Raspberrys can be a bit unreliable on WiFi sometimes and drop out of the
cluster with a short timeout. An increased timeout gives them more room.
This may result in the cluster being without leader for a bit longer,
but that isn't too dramatic.

src/cluster/cluster.service.spec.ts

@@ -69,7 +69,8 @@ describe('ClusterService', () => {
   it('should determine the local IP', () => {
     expect(Democracy).toHaveBeenCalledWith({
       source: '192.168.1.108:6425',
-      peers: []
+      peers: [],
+      timeout: 30000
     });
   });
 

src/cluster/cluster.service.ts

@@ -44,7 +44,8 @@ export class ClusterService extends Democracy
     ).address;
     super({
       source: `${ip}:${config.port}`,
-      peers: Array.from(config.peerAddresses)
+      peers: Array.from(config.peerAddresses),
+      timeout: 30000
     });
 
     this.networkInterfaces = networkInterfaces;