Prevent static field checking for dynamic classes

Prevent static field checking for dynamic classes

In order to check for the correctness of the accesses to fields of objects,
pylint uses astng, but this is known to fail on some dynamically generated
classes. Still, newer pylint versions are stricter at performing this check, and
therefore fail while testing our codebase. Disable the checking of a few
selected classes that incur in this problem.

Signed-off-by: Michele Tartara <mtartara@google.com>
Reviewed-by: Thomas Thrainer <thomasth@google.com>