install python3-pyinotify in dev images (used in newer odoo 11 version)

docker_build.py

@@ -179,7 +179,7 @@
                 'RUN DEBIAN_FRONTEND=noninteractive apt-get install -y -qq ')
             if odoo_type == 'odoo11':
                 myfile.write(
-                    'python3-watchdog python3-ipdb\n')
+                    'python3-watchdog python3-ipdb python3-pyinotify\n')
             elif odoo_type in ('odoo10', ):
                 myfile.write(
                     'python-ipdb\n')