Allow boot directly into mfg test.

src/platform/memento_softwareupdate/memento_updater.sh

Index: src/platform/memento_softwareupdate/memento_updater.sh
diff --git a/src/platform/memento_softwareupdate/memento_updater.sh b/src/platform/memento_softwareupdate/memento_updater.sh
index be5f4ae9ad3ffc0e8bf3520bfc3ea98f0ff9a48f..21b523997fead1cc0b93ebf5e9e19893fb13ac44 100755
--- a/src/platform/memento_softwareupdate/memento_updater.sh
+++ b/src/platform/memento_softwareupdate/memento_updater.sh
@@ -170,12 +170,12 @@ fi
 ROOT_DEV=${INSTALL_DEV%%[0-9]*}
 
 # Do some device sanity checks.
-if ! expr match "$LOCAL_DEV" '^/dev/[a-z][a-z]*[12345]$' > /dev/null
+if ! expr match "$LOCAL_DEV" '^/dev/[a-z][a-z]*[123458]$' > /dev/null
 then
   log "didnt find good local device. local: $LOCAL_DEV install: $INSTALL_DEV"
   exit 1
 fi
-if ! expr match "$INSTALL_DEV" '^/dev/[a-z][a-z]*[12345]$' > /dev/null
+if ! expr match "$INSTALL_DEV" '^/dev/[a-z][a-z]*[123458]$' > /dev/null
 then
   log "didnt find good install device. local: $LOCAL_DEV install: $INSTALL_DEV"
   exit 1