Imports istio.io/istio/security/pkg/nodeagent/plugin google.golang.org/genproto/googleapis/iam/credentials/v1 github.com/golang/protobuf/ptypes google.golang.org/grpc/credentials google.golang.org/grpc/metadata google.golang.org/grpc istio.io/istio/pkg/log Standard library imports context crypto/x509 errors fmt time