clear configuration variables before running tests

Author: dhellmann

tests/run_tests

@@ -31,6 +31,10 @@ export HOOK_VERBOSE_OPTION="-q"
 # tox-created virtualenv.
 export VIRTUALENVWRAPPER_PYTHON="$envdir/bin/python"
 
+# Clear any user settings for the hook directory or log directory
+unset VIRTUALENVWRAPPER_HOOK_DIR
+unset VIRTUALENVWRAPPER_LOG_DIR
+
 # Run the test scripts with a little formatting around them to make it
 # easier to find where each script output starts.
 for test_shell in bash ksh zsh