Bug 1701576 - Improve openSUSE detection during bootstrap r=glandium,mhentges DONTBUILD

Differential Revision: https://phabricator.services.mozilla.com/D110059

python/mozboot/mozboot/bootstrap.py

@@ -242,7 +242,7 @@ class Bootstrapper(object):
                 cls = ArchlinuxBootstrapper
             elif dist_id in ("void"):
                 cls = VoidBootstrapper
-            elif os.path.exists("/etc/SUSE-brand"):
+            elif dist_id in ("opensuse", "opensuse-tumbleweed", "suse"):
                 cls = OpenSUSEBootstrapper
             else:
                 raise NotImplementedError(