inadvertent capitalization of json type defs (#1563)

pkg/api/vlabs/types.go

@@ -182,9 +182,9 @@ type KubernetesConfig struct {
 	DNSServiceIP                     string  `json:"dnsServiceIP,omitempty"`
 	ServiceCidr                      string  `json:"serviceCidr,omitempty"`
 	NetworkPolicy                    string  `json:"networkPolicy,omitempty"`
-	NonMasqueradeCidr                string  `json:"NonMasqueradeCidr,omitempty"`
+	NonMasqueradeCidr                string  `json:"nonMasqueradeCidr,omitempty"`
 	MaxPods                          int     `json:"maxPods,omitempty"`
-	DockerBridgeSubnet               string  `json:"DockerBridgeSubnet,omitempty"`
+	DockerBridgeSubnet               string  `json:"dockerBridgeSubnet,omitempty"`
 	NodeStatusUpdateFrequency        string  `json:"nodeStatusUpdateFrequency,omitempty"`
 	CtrlMgrNodeMonitorGracePeriod    string  `json:"ctrlMgrNodeMonitorGracePeriod,omitempty"`
 	CtrlMgrPodEvictionTimeout        string  `json:"ctrlMgrPodEvictionTimeout,omitempty"`