message: [tf.data service] Always link server lib
  This addresses an issue where server_lib could be left out of pywrap_tensorflow.so, causing errors like
  "undefined symbol: _ZN10tensorflow4data18GrpcDataServerBase9BoundPortEv"
diff: @@ -244,6 +244,7 @@ cc_library(
  name = "server_lib",
  srcs = ["server_lib.cc"],
  hdrs = ["server_lib.h"],
  + linkstatic = True,
  visibility = [
  "//visibility:public",
  ],
  @@ -257,6 +258,7 @@ cc_library(
  "//tensorflow/core:tensorflow",
  tf_grpc_cc_dependency(),
  ],
  + alwayslink = 1,
  )
  cc_library(
  