Add V4 Identifier POST endpoint, remove unused V4 GET endpoint

[samandmoore]

Summary

• TT client side log-ins are done with a combination of two API calls: POST /v1/identifier followed by a GET to a v4 app version build path visitor configs endpoint. We'd like to replace this POST + GET chain with a single endpoint that performs the combined behavior of both endpoints.

• We'd like to remove the GET /v4/apps/:app_id/versions/:version_id/builds/:timestamp/identifier_types/:identifier_type/identifiers/:value/visitor_config endpoint. This endpoint is not used and never has been.

The new endpoint will look like this:

POST /v4/apps/:app_id/versions/:version_id/builds/:timestamp/identifier { identifier_type: 'broker_dealer_user_id', value: '123', visitor_id: 'current client-side visitor id' }

Other Information

The v4 app version build path identifier visitor configs endpoint was recently added, but never used, so we feel good deleting it.

/domain @Betterment/test_track_core /no-platform

[nanda-prbot]

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[jmileham]

<< domain << platform tafn

[nanda-prbot]

@samandmoore needs to incorporate feedback from @jmileham. Bump when done.

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[samandmoore]

bump @jmileham thoughts?

[nanda-prbot]

Needs @jmileham to provide domain review Needs @jmileham to provide platform review

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[jmileham]

This looks awesome.

Domain lgtm platform lgtm!