hgserver: update tests for 4.8 compatibility (Bug 1501686) r=gps

The tests under `hgserver/` pass, with the exception of some
extra output under 4.8. There is also a test which checks for
`mozreview-ldap-associate` which is EOL and failing under
4.7 as well, this commit removes that section.

`test-bookmarks-replication.t` is still intermittently
failing due to a bookmark not showing up as replicated
on the first call to the `json-bookmarks` webcommand -
subsequent calls show it exists so I suspect there is
a race condition there.

Differential Revision: https://phabricator.services.mozilla.com/D10390

--HG--
extra : moz-landing-system : lando

hgserver/tests/test-obsolescence-server.t

@@ -143,7 +143,8 @@ Pulling should get the obsmarkers
   added 1 changesets with 0 changes to 1 files
   1 new obsolescence markers
   obsoleted 1 changesets
-  new changesets 5217e2ac5b15 (hg44 !)
+  new changesets 5217e2ac5b15 (no-hg48 !)
+  new changesets 5217e2ac5b15 (1 drafts) (hg48 !)
   (run 'hg update' to get a working copy)
   $ hg debugobsolete
   ba1c6c2be69c46fed329d3795c9d906d252fdaf7 5217e2ac5b1538d1630aa54377056dbfab270508 0 (*) {*'user': 'Test User <someone@example.com>'} (glob)

hgserver/tests/test-pash-auth.t

@@ -364,12 +364,6 @@ hgAccountEnabled=FALSE shows account disabled message
   bug (http://tinyurl.com/njcfhma) and request hg access be restored
   for hgdisabled@example.com.
 
-mozreview-ldap-associate isn't enabled on hgssh
-
-  $ ssh -T -F ssh_config -i key1 -l user1@example.com -p $HGPORT $SSH_SERVER mozreview-ldap-associate
-  mozreview-ldap-associate command not available
-  [1]
-
 Failure to connect to LDAP mirror locks us out
 What happens here is nscd caches the valid passwd entry lookup for the user.
 However, the SSH key lookup via LDAP fails and this manifests as no public keys