Preparation for Netbox 3.5

- Reports and Scripts have changed in Netbox 3.5. They need to be uploaded now.
  The Docker compose now creates a volume as it does for the media files
- Napalm has been removed from Netbox 3.5
  All configuration entries for Napalm were removed and napalm itself is removed from the requirements file
- Removed Gunicorn from the image
  Nginx Unit has been used for a while now. No need to install Gunicorn

.dockerignore

@@ -1,10 +1,10 @@
-.git
-.github
-.travis.yml
+.git*
 *.md
-env
 build*
-docker-compose.override.yml
+docker-compose*
+env
+test-configuration
 .netbox/.git*
-.netbox/.travis.yml
+.netbox/contrib
 .netbox/scripts
+.netbox/upgrade.sh