tests: revert commitcloud-backup-sql tests to use legacy behavior.

Summary: These tests were broken in D27710099 (876f812e4b), but they show as passing unless run in a particular environment, so it went unnoticed. This change reverts the tests to use the pre- D27710099 (876f812e4b) behavior, which should unbreak them until they can be updated correctly.

Reviewed By: quark-zju

Differential Revision: D27756348

fbshipit-source-id: cfa6c12871b6ac0d22b8c70400e72b3ec5dd83a3

eden/scm/tests/test-commitcloud-backup-sql1.t

@@ -10,6 +10,7 @@
   > }
   $ . "$TESTDIR/infinitepush/library.sh"
   $ setupcommon
+  $ setconfig commitcloud.pushbackupbookmarks=true
 
 With no configuration it should abort
   $ hg init server

eden/scm/tests/test-commitcloud-backup-sql2.t

@@ -5,6 +5,7 @@
   $ . "$TESTDIR/library.sh"
   $ . "$TESTDIR/infinitepush/library.sh"
   $ setupcommon
+  $ setconfig commitcloud.pushbackupbookmarks=true
   $ mkcommit() {
   >    echo "$1" > "$1"
   >    hg add "$1"