hey folks, got a weird issue by just bumping AKS node count from 2 to 3:

pulumi:pulumi:Stack (aks-dv-ws-je-beta):
    panic: interface conversion: interface {} is nil, not map[string]interface {}
    goroutine 67 [running]:
    <http://github.com/pulumi/pulumi-azure/vendor/github.com/terraform-providers/terraform-provider-azurerm/azurerm.expandKubernetesClusterAddonProfiles(0xc000d35ea0|github.com/pulumi/pulumi-azure/vendor/github.com/terraform-providers/terraform-provider-azurerm/azurerm.expandKubernetesClusterAddonProfiles(0xc000d35ea0>, 0xc000892600)
    	/home/travis/gopath/src/github.com/pulumi/pulumi-azure/vendor/github.com/terraform-providers/terraform-provider-azurerm/azurerm/resource_arm_kubernetes_cluster.go:752 +0x93f
    <http://github.com/pulumi/pulumi-azure/vendor/github.com/terraform-providers/terraform-provider-azurerm/azurerm.resourceArmKubernetesClusterCreateUpdate(0xc000d35ea0|github.com/pulumi/pulumi-azure/vendor/github.com/terraform-providers/terraform-provider-azurerm/azurerm.resourceArmKubernetesClusterCreateUpdate(0xc000d35ea0>, 0x2730100, 0xc0005c4000, 0x24, 0x44bdf80)
    	/home/travis/gopath/src/github.com/pulumi/pulumi-azure/vendor/github.com/terraform-providers/terraform-provider-azurerm/azurerm/resource_arm_kubernetes_cluster.go:538 +0x41c
    <http://github.com/pulumi/pulumi-azure/vendor/github.com/hashicorp/terraform/helper/schema.(*Resource).Apply(0xc000170460|github.com/pulumi/pulumi-azure/vendor/github.com/hashicorp/terraform/helper/schema.(*Resource).Apply(0xc000170460>, 0xc0000bfc70, 0xc000a045a0, 0x2730100, 0xc0005c4000, 0xc000a04501, 0x0, 0x0)
    	/home/travis/gopath/src/github.com/pulumi/pulumi-azure/vendor/github.com/hashicorp/terraform/helper/schema/resource.go:231 +0x250
    <http://github.com/pulumi/pulumi-azure/vendor/github.com/hashicorp/terraform/helper/schema.(*Provider).Apply(0xc000021420|github.com/pulumi/pulumi-azure/vendor/github.com/hashicorp/terraform/helper/schema.(*Provider).Apply(0xc000021420>, 0xc000f95820, 0xc0000bfc70, 0xc000a045a0, 0xc000a045a0, 0x0, 0x0)
    	/home/travis/gopath/src/github.com/pulumi/pulumi-azure/vendor/github.com/hashicorp/terraform/helper/schema/provider.go:283 +0x9c
    <http://github.com/pulumi/pulumi-azure/vendor/github.com/pulumi/pulumi-terraform/pkg/tfbridge.(*Provider).Update(0xc000510e10|github.com/pulumi/pulumi-azure/vendor/github.com/pulumi/pulumi-terraform/pkg/tfbridge.(*Provider).Update(0xc000510e10>, 0x2b1dfa0, 0xc0004085a0, 0xc0000bf360, 0xc000510e10, 0x1, 0x1)
    	/home/travis/gopath/src/github.com/pulumi/pulumi-azure/vendor/github.com/pulumi/pulumi-terraform/pkg/tfbridge/provider.go:687 +0x776
    <http://github.com/pulumi/pulumi-azure/vendor/github.com/pulumi/pulumi/sdk/proto/go._ResourceProvider_Update_Handler.func1(0x2b1dfa0|github.com/pulumi/pulumi-azure/vendor/github.com/pulumi/pulumi/sdk/proto/go._ResourceProvider_Update_Handler.func1(0x2b1dfa0>, 0xc0004085a0, 0x2678880, 0xc0000bf360, 0x2b1dfa0, 0xc0004085a0, 0x2b37140, 0x44bc570)
    	/home/travis/gopath/src/github.com/pulumi/pulumi-azure/vendor/github.com/pulumi/pulumi/sdk/proto/go/provider.pb.go:1265 +0x86
    <http://github.com/pulumi/pulumi-azure/vendor/github.com/grpc-ecosystem/grpc-opentracing/go/otgrpc.OpenTracingServerInterceptor.func1(0x2b1dfa0|github.com/pulumi/pulumi-azure/vendor/github.com/grpc-ecosystem/grpc-opentracing/go/otgrpc.OpenTracingServerInterceptor.func1(0x2b1dfa0>, 0xc0004085a0, 0x2678880, 0xc0000bf360, 0xc000790720, 0xc000790740, 0x0, 0x0, 0x2b08f40, 0xc0002fcb70)
    	/home/travis/gopath/src/github.com/pulumi/pulumi-azure/vendor/github.com/grpc-ecosystem/grpc-opentracing/go/otgrpc/server.go:57 +0x2b0