Actually run gensrcs_conversion_test.

And fix expected bazel target generation -- makeBazelTarget generates a
target_compatible_with, which is not in the expected attrs, causing
tests to fail.

Test: CI
Change-Id: Iddb9b6a7edf99d1f11043b4e77fdd3f256f3d7f2
diff --git a/bp2build/Android.bp b/bp2build/Android.bp
index e0ce194..34548ed 100644
--- a/bp2build/Android.bp
+++ b/bp2build/Android.bp
@@ -51,6 +51,7 @@
         "conversion_test.go",
         "filegroup_conversion_test.go",
         "genrule_conversion_test.go",
+        "gensrcs_conversion_test.go",
         "java_binary_host_conversion_test.go",
         "java_import_conversion_test.go",
         "java_library_conversion_test.go",