Prepare for Bazel incompatible changes

Fixes googletest for upcoming `--incompatible_load_cc_rules_from_bzl` (https://github.com/bazelbuild/bazel/issues/8743) and `--incompatible_load_python_rules_from_bzl` (https://github.com/bazelbuild/bazel/issues/9006).

This change was automatically generated with `buildifier -lint=fix -warnings=all $(find . -name "BUILD" -o -name "BUILD.bazel" -o -name "*.bzl")`.
diff --git a/WORKSPACE b/WORKSPACE
index b69578b..7eb7219 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -4,7 +4,19 @@
 
 # Abseil
 http_archive(
-     name = "com_google_absl",
-     urls = ["https://github.com/abseil/abseil-cpp/archive/master.zip"],
-     strip_prefix = "abseil-cpp-master",
+    name = "com_google_absl",
+    strip_prefix = "abseil-cpp-master",
+    urls = ["https://github.com/abseil/abseil-cpp/archive/master.zip"],
+)
+
+http_archive(
+    name = "rules_cc",
+    strip_prefix = "rules_cc-master",
+    urls = ["https://github.com/bazelbuild/rules_cc/archive/master.zip"],
+)
+
+http_archive(
+    name = "rules_python",
+    strip_prefix = "rules_python-master",
+    urls = ["https://github.com/bazelbuild/rules_python/archive/master.zip"],
 )