Add partial bp2build support for APEX targets (second try).

Test: Added unit test
Change-Id: Icbf0475251aac5d1f13bd35a18f90b6c70f3ae29
diff --git a/apex/Android.bp b/apex/Android.bp
index 6269757..b9b5428 100644
--- a/apex/Android.bp
+++ b/apex/Android.bp
@@ -9,6 +9,7 @@
         "blueprint",
         "soong",
         "soong-android",
+        "soong-bazel",
         "soong-bpf",
         "soong-cc",
         "soong-filesystem",