[roll] Roll fuchsia [swd-e2e-tests] Return error, add extra logging

This changes the upgrade test to return an error up the call chain if
if it fails to create the upgrade_prime2 package. It also adds a few
more log messages, and does some minor reformatting.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/853758
Original-Revision: 3c6b8beeb4c99677958250881f9f7dee7d883fdf
GitOrigin-RevId: fce4cd330cd338cc738b86595a870c096741dc9c
Change-Id: I3498c8e03fd1467d5095735c520257f0bd343f82
diff --git a/stem b/stem
index cc2797f..24e29ba 100644
--- a/stem
+++ b/stem
@@ -11,7 +11,7 @@
              githooks="integration/git-hooks"
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="e90cf57571e0ff57c9d5fc88f75d0a332a4c1822"/>
+             revision="3c6b8beeb4c99677958250881f9f7dee7d883fdf"/>
   </projects>
   <hooks>
     <hook name="install-environment"