Integration test for Multisig delegated vLEI issuance (QVI, LE, ECR)

[nkongsuwan]

Add an integration test for multi-signature delegated issuance of QVI, LE, and ECR vLEI credentials:

• The script simulates the process described in the vLEI EGF where QVI has 3 QARs and LE has 3 LARs.
• Here, GLEIF has 2 GARs that form a GEDA and delegate to the QVI AID. (Technically, the GEDA has 5 External GARs, but the test will get too long with 5 GARs.)
• The ECR credential is issued directly from the LE.

[Edit 18 Feb]: the three problems below seem to have been resolved.
Currently, there are two problems, one major and one minor:

• Major: The test could not get to the end due to crashes in KERIA after using client.registries().list(). This is related to the issues in Signify-TS and KERIA, Intermittent KERIA Internal Server Errors (HTTP 500) when listing registries. keria#147, Transient error with using client.registries().list(name) keria#177, and add test triggering credential revocation crash #202.
• Minor: KERIA's processing time for credential issuance from a multisig AID to a multisig AID seems to be random, sometimes causing test timeouts.
• It seems LARs cannot get a credential QARs for some reason.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.85%. Comparing base (a49db7f) to head (09030c9).

Additional details and impacted files

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  Coverage        82.85%   82.85%           
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  Files               47       47           
  Lines             4200     4200           
  Branches          1046     1046           
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  Hits              3480     3480           
  Misses             691      691           
  Partials            29       29           

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[nkongsuwan]

This PR is completed, but it is based on the recent change in PR #222, which hasn't yet been merged.

[seriouscoderone]

Why not use const?

[pfeairheller]

PR #222 has been merged so a rebase here should get this build working.

[lenkan]

This LGTM. Only thing is that test time increases significantly, I suppose there is now some overlap in this test and the multisig.test.ts file that can be addressed later.