Add a health endpoint that fails if we can't get a vault token (#82)

go.mod

@@ -3,83 +3,67 @@ module github.com/fairwindsops/vault-token-injector
 go 1.18
 
 require (
-	github.com/hashicorp/go-tfe v1.16.0
-	github.com/hashicorp/vault/api v1.8.2
+	github.com/hashicorp/go-tfe v1.18.0
+	github.com/hashicorp/vault/api v1.9.0
 	github.com/prometheus/client_golang v1.14.0
+	github.com/prometheus/client_model v0.3.0
 	github.com/spf13/cobra v1.6.1
 	github.com/spf13/pflag v1.0.5
-	github.com/spf13/viper v1.14.0
+	github.com/spf13/viper v1.15.0
 	github.com/stretchr/testify v1.8.1
-	k8s.io/klog/v2 v2.80.1
+	k8s.io/klog/v2 v2.90.0
 )
 
 require (
-	github.com/armon/go-metrics v0.4.1 // indirect
-	github.com/armon/go-radix v1.0.0 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cenkalti/backoff/v3 v3.2.2 // indirect
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/fatih/color v1.13.0 // indirect
+	github.com/fatih/color v1.14.1 // indirect
 	github.com/fsnotify/fsnotify v1.6.0 // indirect
 	github.com/go-logr/logr v1.2.3 // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
-	github.com/golang/snappy v0.0.4 // indirect
 	github.com/google/go-querystring v1.1.0 // indirect
 	github.com/hashicorp/errwrap v1.1.0 // indirect
 	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect
 	github.com/hashicorp/go-hclog v1.4.0 // indirect
-	github.com/hashicorp/go-immutable-radix v1.3.1 // indirect
 	github.com/hashicorp/go-multierror v1.1.1 // indirect
-	github.com/hashicorp/go-plugin v1.4.8 // indirect
-	github.com/hashicorp/go-retryablehttp v0.7.1 // indirect
+	github.com/hashicorp/go-retryablehttp v0.7.2 // indirect
 	github.com/hashicorp/go-rootcerts v1.0.2 // indirect
-	github.com/hashicorp/go-secure-stdlib/mlock v0.1.2 // indirect
 	github.com/hashicorp/go-secure-stdlib/parseutil v0.1.7 // indirect
 	github.com/hashicorp/go-secure-stdlib/strutil v0.1.2 // indirect
 	github.com/hashicorp/go-slug v0.10.1 // indirect
 	github.com/hashicorp/go-sockaddr v1.0.2 // indirect
-	github.com/hashicorp/go-uuid v1.0.3 // indirect
 	github.com/hashicorp/go-version v1.6.0 // indirect
-	github.com/hashicorp/golang-lru v0.5.4 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/hashicorp/jsonapi v0.0.0-20210826224640-ee7dae0fb22d // indirect
-	github.com/hashicorp/vault/sdk v0.6.2 // indirect
-	github.com/hashicorp/yamux v0.1.1 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/magiconair/properties v1.8.7 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
-	github.com/mattn/go-isatty v0.0.16 // indirect
+	github.com/mattn/go-isatty v0.0.17 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
-	github.com/mitchellh/copystructure v1.2.0 // indirect
 	github.com/mitchellh/go-homedir v1.1.0 // indirect
-	github.com/mitchellh/go-testing-interface v1.14.1 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
-	github.com/mitchellh/reflectwalk v1.0.2 // indirect
-	github.com/oklog/run v1.1.0 // indirect
-	github.com/pelletier/go-toml v1.9.5 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/pelletier/go-toml/v2 v2.0.6 // indirect
-	github.com/pierrec/lz4 v2.6.1+incompatible // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/prometheus/client_model v0.3.0 // indirect
-	github.com/prometheus/common v0.39.0 // indirect
+	github.com/prometheus/common v0.40.0 // indirect
 	github.com/prometheus/procfs v0.9.0 // indirect
+	github.com/rogpeppe/go-internal v1.9.0 // indirect
 	github.com/ryanuber/go-glob v1.0.0 // indirect
 	github.com/spf13/afero v1.9.3 // indirect
 	github.com/spf13/cast v1.5.0 // indirect
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect
-	github.com/subosito/gotenv v1.4.1 // indirect
-	go.uber.org/atomic v1.10.0 // indirect
-	golang.org/x/crypto v0.4.0 // indirect
-	golang.org/x/net v0.4.0 // indirect
-	golang.org/x/sys v0.3.0 // indirect
-	golang.org/x/text v0.5.0 // indirect
+	github.com/subosito/gotenv v1.4.2 // indirect
+	golang.org/x/crypto v0.6.0 // indirect
+	golang.org/x/net v0.7.0 // indirect
+	golang.org/x/sys v0.5.0 // indirect
+	golang.org/x/text v0.7.0 // indirect
 	golang.org/x/time v0.3.0 // indirect
-	google.golang.org/genproto v0.0.0-20221227171554-f9683d7f8bef // indirect
-	google.golang.org/grpc v1.51.0 // indirect
 	google.golang.org/protobuf v1.28.1 // indirect
 	gopkg.in/ini.v1 v1.67.0 // indirect
 	gopkg.in/square/go-jose.v2 v2.6.0 // indirect
-	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )