Add ignores for new PIE786 lint

Local noqa override for conftest.py, because *any* error during
the Sphinx live-load is a failing test.

Blanket override on cmdline.py for now, awaiting the exception
hierarchy rework of #118.

conftest.py

@@ -164,13 +164,11 @@ def sphinx_load_test():
 
     def func(path):
         """Perform the 'live' inventory load test."""
-        # Easier to have the file open the whole time
         with path.open("rb") as f:
-
-            # Attempt the load operation
             try:
                 IFile.load(f, "", osp.join)
-            except Exception as e:
+            except Exception as e:  # noqa: PIE786
+                # An exception here is a failing test, not a test error.
                 pytest.fail(e)
 
     return func

tox.ini

@@ -122,7 +122,9 @@ per_file_ignores =
   tests/*:           S101, RST304,RST305,RST306
   conftest.py: D202, S101, RST304,RST305,RST306
 # F401: MANY things imported but unused in __init__,py
-  src/sphobjinv/__init__.py:  F401 RST304,RST305,RST306
+  src/sphobjinv/__init__.py:  F401, RST304,RST305,RST306
+# PIE786: CLI uses 'except Exception:' as a catchall... to be changed, eventually
+  src/sphobjinv/cmdline.py:   PIE786, RST304,RST305,RST306
 
 #flake8-import-order
 import-order-style = smarkets