static-http: have `statichttprepo.instance` return a peer object

It previously returned a statichttprepo object which could not be used for
anything but creating a peer. So lets put it into the peer bucket with a peer
behavior.

mercurial/hg.py

@@ -147,13 +147,13 b' repo_schemes = {'
     b'bundle': bundlerepo,
     b'union': unionrepo,
     b'file': LocalFactory,
-    b'static-http': statichttprepo,
 }
 
 peer_schemes = {
     b'http': httppeer,
     b'https': httppeer,
     b'ssh': sshpeer,
+    b'static-http': statichttprepo,
 }
 
 

mercurial/statichttprepo.py

@@ -262,4 +262,4 b' class statichttprepository('
 def instance(ui, path, create, intents=None, createopts=None):
     if create:
         raise error.Abort(_(b'cannot create new static-http repository'))
-    return statichttprepository(ui, path[7:])
+    return statichttprepository(ui, path[7:]).peer()