Update Operation Proofs to use CapabilityInvocation proofs

[aljones15]

1. All proofs (expect merge events) should have a purpose of CapabilityInvocation
2. There should be two proofs for each ledger write or update
3. The first proof should have capabilityAction: write and a invocationTarget set to the ledger itself with a postfix
   • <ledgerId>/config for LedgerConfiguration events and
   • <ledgerId>/records for writing new records to the ledger
4. The second proof should also have capabilityAction: write and an invocationTarget set to the record.id
5. Most if not all existing record writes in the test project should conform to the 2 CapabilityInvocation proofs
6. All of the LedgerConfiguration writes will need to be changed from AssertionPurpose to CapabilityInvocation