Move test inputs for EncryptionConfiguration tests into testdata.

Author: immutablet

staging/src/k8s.io/apiserver/pkg/server/options/encryptionconfig/BUILD

@@ -29,6 +29,7 @@ go_library(
 go_test(
     name = "go_default_test",
     srcs = ["config_test.go"],
+    data = glob(["testdata/**"]),
     embed = [":go_default_library"],
     deps = [
         "//staging/src/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",