test-pushrebase-emit-obsmarkers: use modern configs

Summary:
Enable narrow-heads.

Change the revset `:` to `all()`. With narrow-heads, `:` selects all commits
including those that are not referred by visible heads. The `all()` revset
only selects commits reachable from visible heads.

Reviewed By: krallin

Differential Revision: D22200498

fbshipit-source-id: beb863d42069ae898e419a4a75b3a707c72ae1f9

eden/mononoke/tests/integration/test-pushrebase-emit-obsmarkers.t

@@ -54,7 +54,7 @@ Push commits that will be obsoleted
   $ hg up -q 0
   $ echo 1 > 1 && hg add 1 && hg ci -m 1
   $ echo 2 > 2 && hg add 2 && hg ci -m 2
-  $ log -r ":"
+  $ log -r "all()"
   @  2 [draft;rev=4;0c67ec8c24b9]
   |
   o  1 [draft;rev=3;a0c9c5791058]
@@ -74,7 +74,7 @@ Push commits that will be obsoleted
   added 2 changesets with 0 changes to 0 files
   updating bookmark master_bookmark
   2 files updated, 0 files merged, 0 files removed, 0 files unresolved
-  $ log -r ":"
+  $ log -r "all()"
   @  2 [public;rev=6;dc31470c8386] default/master_bookmark
   |
   o  1 [public;rev=5;c2e526aacb51]
@@ -89,7 +89,7 @@ Push commits that will be obsoleted
 Push commits that will not be obsoleted
   $ hg up -q dc31470c8386
   $ echo 3 > 3 && hg add 3 && hg ci -m 3
-  $ log -r ":"
+  $ log -r "all()"
   @  3 [draft;rev=7;6398085ceb9d]
   |
   o  2 [public;rev=6;dc31470c8386] default/master_bookmark
@@ -110,7 +110,7 @@ Push commits that will not be obsoleted
   adding file changes
   added 0 changesets with 0 changes to 0 files
   updating bookmark master_bookmark
-  $ log -r ":"
+  $ log -r "all()"
   @  3 [public;rev=7;6398085ceb9d] default/master_bookmark
   |
   o  2 [public;rev=6;dc31470c8386]

eden/scm/tests/features.py

@@ -144,7 +144,6 @@ narrowheadsincompatiblelist = """
 
     # Mononotke tests
     test-commitcloud.t
-    test-pushrebase-emit-obsmarkers.t
     test-pushrebase.t
     test-walker-scrub-blobstore.t
 """