Make transitive starlark loads explicit

This fixes the build with bazel 0.25.

Bug: Issue 10855
Change-Id: I480b5a929a48ce327daf95d7f74e167e50aeed6d
diff --git a/WORKSPACE b/WORKSPACE
index c9ebced..9957123 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "a5525ae2c43e61cf113dacc03691cb2bcf44fb12",
+    commit = "d100b6aad6b37e7db8fa141020c882dc97fb7723",
     #local_path = "/home/<user>/projects/bazlets",
 )
 
diff --git a/tools/bzl/junit.bzl b/tools/bzl/junit.bzl
index 3af7e58..97307bd 100644
--- a/tools/bzl/junit.bzl
+++ b/tools/bzl/junit.bzl
@@ -1,4 +1,6 @@
 load(
     "@com_googlesource_gerrit_bazlets//tools:junit.bzl",
-    "junit_tests",
+    _junit_tests = "junit_tests",
 )
+
+junit_tests = _junit_tests
diff --git a/tools/bzl/plugin.bzl b/tools/bzl/plugin.bzl
index 0b25d23..4d2dbdd 100644
--- a/tools/bzl/plugin.bzl
+++ b/tools/bzl/plugin.bzl
@@ -1,6 +1,10 @@
 load(
     "@com_googlesource_gerrit_bazlets//:gerrit_plugin.bzl",
-    "PLUGIN_DEPS",
-    "PLUGIN_TEST_DEPS",
-    "gerrit_plugin",
+    _gerrit_plugin = "gerrit_plugin",
+    _plugin_deps = "PLUGIN_DEPS",
+    _plugin_test_deps = "PLUGIN_TEST_DEPS",
 )
+
+gerrit_plugin = _gerrit_plugin
+PLUGIN_DEPS = _plugin_deps
+PLUGIN_TEST_DEPS = _plugin_test_deps