lfs: use the local store method for opening a blob
I noticed that when I cloned without updating and then turned around and pushed
that clone to an lfs server, it was only trying to find the blob in the local
store.
Writes to the dummyremote (file based store) use local.read(), which looks at
both the usercache and local store.
running: init test1
result: None
running: add foo
result: 0
running: commit -m commit1 -d 2000-01-01 foo
result: None
running: commit -m commit2 -d 2000-01-02 foo
result: None
running: log -r 0
changeset: 0:0e4634943879
user: test
date: Sat Jan 01 00:00:00 2000 +0000
summary: commit1
result: None
running: log -r tip
changeset: 1:45589e459b2e
tag: tip
user: test
date: Sun Jan 02 00:00:00 2000 +0000
summary: commit2
result: None