stream-clone: filter possible missing requirements using all supported one

The `supportedformat` requirements is missing some important requirements and it
seems better to filter out with all requirements we know, not just an
"arbitrary" subset.

This is especially relevant as we about to phase out the `supportedformat` class
attribute.

(a backport of this change to stable should be sent soon).

Differential Revision: https://phab.mercurial-scm.org/D12031

mercurial/streamclone.py

@@ -128,7 +128,7 b' def canperformstreamclone(pullop, bundle'
 
         streamreqs = set(streamreqs.split(b','))
         # Server requires something we don't support. Bail.
-        missingreqs = streamreqs - repo.supportedformats
+        missingreqs = streamreqs - repo.supported
         if missingreqs:
             pullop.repo.ui.warn(
                 _(
@@ -503,7 +503,7 b' def applybundlev1(repo, fp):'
         )
 
     filecount, bytecount, requirements = readbundle1header(fp)
-    missingreqs = requirements - repo.supportedformats
+    missingreqs = requirements - repo.supported
     if missingreqs:
         raise error.Abort(
             _(b'unable to apply stream clone: unsupported format: %s')

tests/test-http-bundle1.t

@@ -70,8 +70,10 b' try to clone via stream but missing requ'
 
   $ cat > $TESTTMP/removesupportedformat.py << EOF
   > from mercurial import localrepo
-  > def extsetup(ui):
-  >     localrepo.localrepository.supportedformats.remove(b'generaldelta')
+  > def reposetup(ui, repo):
+  >     local = repo.local()
+  >     if local is not None:
+  >         local.supported.remove(b'generaldelta')
   > EOF
 
   $ hg clone --config extensions.rsf=$TESTTMP/removesupportedformat.py --stream http://localhost:$HGPORT/ copy3

tests/test-http.t

@@ -59,8 +59,10 b' try to clone via stream but missing requ'
 
   $ cat > $TESTTMP/removesupportedformat.py << EOF
   > from mercurial import localrepo
-  > def extsetup(ui):
-  >     localrepo.localrepository.supportedformats.remove(b'generaldelta')
+  > def reposetup(ui, repo):
+  >     local = repo.local()
+  >     if local is not None:
+  >         local.supported.remove(b'generaldelta')
   > EOF
 
   $ hg clone --config extensions.rsf=$TESTTMP/removesupportedformat.py --stream http://localhost:$HGPORT/ copy3