Boulder: New style authorizations

[rolandshoemaker]

Tracking ticket for the rest of the work and the order in which it should probably be completed:

• [x] #4051: Add schema
• [x] #4041: WFE interface
• [x] #4093: Add get/count RPCs
• [x] #4082: Add get/new SA tests
• [x] #4078: RA authorization generation
• [x] #4077: Deactivation/validation updates
• [x] #4079: General integration tests
• [x] #4188: Add EAP2 tool

[rolandshoemaker]

This is done! All that remains is enabling it in staging and then production.