Run zipalign tests in presubmit.

Test: treehugger
Change-Id: I2779c04313976d29c29c50920c0b356309c08439
diff --git a/tools/zipalign/Android.bp b/tools/zipalign/Android.bp
index 3eb660d..ab04d1d 100644
--- a/tools/zipalign/Android.bp
+++ b/tools/zipalign/Android.bp
@@ -65,4 +65,5 @@
          "tests/data/unaligned.zip",
     ],
     defaults: ["zipalign_defaults"],
+    test_suites: ["general-tests"],
 }