.arcconfig

tests: replace `cd ..` with an absolute path in a couple ssh tests

These tests are broken under py3 on Windows to the point where the `cd ..` was
actually escaping into the system wide $TEMP.  The subsequent `hg init` created
a repo there, and then added a local extension to the hgrc.  This breaks every
single subsequent test when it tries to `hg init` in its $TESTTMP, and can't
load the localwrite.py extension.  And since I botched this the first time and
replaced the wrong `cd ..`, this just replaces all of them.  I've noticed test
garbage in $TEMP recently, and maybe this will help.

Perhaps `hg init` shouldn't load the config for the local repo, but this is an
easy enough workaround for now.

{
    "conduit_uri": "https://phab.mercurial-scm.org/api",
    "repository.callsign": "HG",
    "arc.land.onto.default": "@",
    "base": "hg:.^"
}