update BUILD files

vendor/github.com/appc/spec/schema/BUILD

@@ -9,6 +9,7 @@ go_library(
         "pod.go",
         "version.go",
     ],
+    importpath = "github.com/appc/spec/schema",
     visibility = ["//visibility:public"],
     deps = [
         "//vendor/github.com/appc/spec/schema/types:go_default_library",

vendor/github.com/appc/spec/schema/common/BUILD

@@ -3,6 +3,7 @@ load("@io_bazel_rules_go//go:def.bzl", "go_library")
 go_library(
     name = "go_default_library",
     srcs = ["common.go"],
+    importpath = "github.com/appc/spec/schema/common",
     visibility = ["//visibility:public"],
 )
 

vendor/github.com/appc/spec/schema/types/BUILD

@@ -30,6 +30,7 @@ go_library(
         "uuid.go",
         "volume.go",
     ],
+    importpath = "github.com/appc/spec/schema/types",
     visibility = ["//visibility:public"],
     deps = [
         "//vendor/github.com/appc/spec/schema/common:go_default_library",

vendor/github.com/appc/spec/schema/types/resource/BUILD

@@ -9,6 +9,7 @@ go_library(
         "scale_int.go",
         "suffix.go",
     ],
+    importpath = "github.com/appc/spec/schema/types/resource",
     visibility = ["//visibility:public"],
     deps = [
         "//vendor/github.com/spf13/pflag:go_default_library",