CHROMIUM: ban use of EAPIs 0 & 1 & 2

We don't want people still using these, so ban them.

BUG=None
TEST=CQ passes

Change-Id: I2b09d613a9d28726c1c6ace51ba09c1dcb708163
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/portage_tool/+/3252036
Reviewed-by: Sloan Johnson <sloanjohnson@google.com>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
diff --git a/lib/portage/__init__.py b/lib/portage/__init__.py
index bf80e91..71bfae3 100644
--- a/lib/portage/__init__.py
+++ b/lib/portage/__init__.py
@@ -467,6 +467,7 @@
 _testing_eapis = frozenset([
 ])
 _deprecated_eapis = frozenset([
+	"0", "1", "2",
 	"3_pre1",
 	"3_pre2",
 	"4_pre1",