Capirca Wishlist and Roadmap

Current roadmap

1. Update documentation.
2. Adding Palo Alto Network generator tests.
3. Adding Cisco XE generator.
4. Upgrade to Python 3 and drop support for 2.7

Wishlist Items for Capirca Development

1. Re-Think SRX addressbook managment (ankenyr)
2. Move to using paramaterization for tests.