tests: disable test-audit-path.t with simple store

The simple store is using a primitive filename encoding scheme.
Many tests in this file fail. So let's disable it for now.

At some point, we should support a mode where we can run tests
without fnstore or dotencode and have all tests assuming use of
these filename encoding mechanisms be conditional on their usage.

Differential Revision: https://phab.mercurial-scm.org/D3101

tests/test-audit-path.t

@@ -1,3 +1,7 b''
+The simple store doesn't escape paths robustly and can't store paths
+with periods, etc. So much of this test fails with it.
+#require no-reposimplestore
+
   $ hg init
 
 audit of .hg