Invalid memory address or nil pointer dereference panic from azure_loadbalancer.go

Issue

• We get the following log messages every two minutes on the active master controller in our development OpenShift cluster:

Mar 08 23:03:14 master1 atomic-openshift-master-controllers[16232]: E0308 23:03:14.934637   16232 runtime.go:66] Observed a panic: "invalid memory address or nil pointer dereference" (runtime error: invalid memory address or nil pointer dereference)

• This is the content of our /etc/azure/azure.conf

{"resourceGroup": "example", "subscriptionID": "xxxxxxxxxxxx-xxxx-xxxx-xxxxxxxxxxxx", "aadClientID": "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx", "aadClientSecret": "xxxxx", "tenantID": "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"}