linter: disable python2 scripts

There are numerous python2 scripts in this repository that do not
conform to pycodestyle/flake8.  Disable linters on them so that we
can enable these globally.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ia1a20c93bcd063de731504c22dcb21a1289d1d78
diff --git a/.linter-ignore b/.linter-ignore
new file mode 100644
index 0000000..60ae444
--- /dev/null
+++ b/.linter-ignore
@@ -0,0 +1,9 @@
+configs/Lanyang.py
+configs/Witherspoon.py
+configs/Zaius.py
+pyflashbmc/bmc_update.py
+pyinventorymgr/inventory_items.py
+pyinventorymgr/sync_inventory_items.py
+pyipmitest/ipmi_debug.py
+pysystemmgr/system_manager.py
+pytools/gpioutil