test: enable sparse-revlog for test-clonebundles.t

We are about to enable sparse-revlog globally. To help with reviewing the
tests change, we isolate them in individual changesets.

Differential Revision: https://phab.mercurial-scm.org/D5316

tests/test-clonebundles.t

@@ -1,3 +1,9 b''
+TRANSITIONAL CONFIG
+  $ cat << EOF >> $HGRCPATH
+  > [format]
+  > sparse-revlog = yes
+  > EOF
+
 #require no-reposimplestore no-chg
 
 Set up a server
@@ -295,7 +301,7 b' Stream clone bundles are supported'
 
   $ hg -R server debugcreatestreamclonebundle packed.hg
   writing 613 bytes for 4 files
-  bundle requirements: generaldelta, revlogv1
+  bundle requirements: generaldelta, revlogv1, sparserevlog
 
 No bundle spec should work