Suggest adding Goldpinger to the list

README.md

@@ -534,6 +534,7 @@ Projects
 * [Searchlight](https://github.com/appscode/searchlight)
 * [Ingress Monitor Controller](https://github.com/stakater/IngressMonitorController) - A Kubernetes Controller to watch your ingresses and create liveness alerts for your endpoints
 * [Kubespy](https://github.com/pulumi/kubespy) - Tools for observing Kubernetes resources in real time, powered by Pulumi.
+* [Goldpinger](https://github.com/bloomberg/goldpinger) display, monitor and alert on inter-cluster connectivity
 
 ## Testing
 
@@ -670,6 +671,7 @@ Projects
 * [Network-Controller](https://github.com/linkernetworks/network-controller) - Open vSwitch, Multiple network interfaces that associate with Kubernetes pods
 * [AWS VPC CNI](https://github.com/aws/amazon-vpc-cni-k8s) - Networking plugin using Elastic Network Interfaces
 * [NSX-T](https://www.vmware.com/products/nsx/cloud-native-apps.html) - CNI plugin supporting load balancing and distributed firewalls.
+* [Goldpinger](https://github.com/bloomberg/goldpinger) display, monitor and alert on inter-cluster connectivity
 
 ## Service mesh