update credential provider godoc with unique provider name req

Signed-off-by: Anish Ramasekar <anish.ramasekar@gmail.com>

Kubernetes-commit: 92e35e7618ff30e1c8e79f5efb3788dfedf24bb3

config/v1/types.go

@@ -32,7 +32,7 @@ type CredentialProviderConfig struct {
 	// Multiple providers may match against a single image, in which case credentials
 	// from all providers will be returned to the kubelet. If multiple providers are called
 	// for a single image, the results are combined. If providers return overlapping
-	// auth keys, the value from the provider earlier in this list is used.
+	// auth keys, the value from the provider earlier in this list is attempted first.
 	Providers []CredentialProvider `json:"providers"`
 }
 
@@ -42,6 +42,7 @@ type CredentialProvider struct {
 	// name is the required name of the credential provider. It must match the name of the
 	// provider executable as seen by the kubelet. The executable must be in the kubelet's
 	// bin directory (set by the --image-credential-provider-bin-dir flag).
+	// Required to be unique across all providers.
 	Name string `json:"name"`
 
 	// matchImages is a required list of strings used to match against images in order to

config/v1alpha1/types.go

@@ -32,7 +32,7 @@ type CredentialProviderConfig struct {
 	// Multiple providers may match against a single image, in which case credentials
 	// from all providers will be returned to the kubelet. If multiple providers are called
 	// for a single image, the results are combined. If providers return overlapping
-	// auth keys, the value from the provider earlier in this list is used.
+	// auth keys, the value from the provider earlier in this list is attempted first.
 	Providers []CredentialProvider `json:"providers"`
 }
 
@@ -42,6 +42,7 @@ type CredentialProvider struct {
 	// name is the required name of the credential provider. It must match the name of the
 	// provider executable as seen by the kubelet. The executable must be in the kubelet's
 	// bin directory (set by the --image-credential-provider-bin-dir flag).
+	// Required to be unique across all providers.
 	Name string `json:"name"`
 
 	// matchImages is a required list of strings used to match against images in order to

config/v1beta1/types.go

@@ -1004,7 +1004,7 @@ type CredentialProviderConfig struct {
 	// Multiple providers may match against a single image, in which case credentials
 	// from all providers will be returned to the kubelet. If multiple providers are called
 	// for a single image, the results are combined. If providers return overlapping
-	// auth keys, the value from the provider earlier in this list is used.
+	// auth keys, the value from the provider earlier in this list is attempted first.
 	Providers []CredentialProvider `json:"providers"`
 }
 
@@ -1014,6 +1014,7 @@ type CredentialProvider struct {
 	// name is the required name of the credential provider. It must match the name of the
 	// provider executable as seen by the kubelet. The executable must be in the kubelet's
 	// bin directory (set by the --image-credential-provider-bin-dir flag).
+	// Required to be unique across all providers.
 	Name string `json:"name"`
 
 	// matchImages is a required list of strings used to match against images in order to