RAS-1400 Extend party enrolment to include business and survey details

[LJBabbage]

What and why?

This PR updates the enrolment information endpoint, instead of just posting busines_ids and survey_ids it provides all the bits that are needed. It also adds a new endpoint just to checkout enrolment

How to test?

Deploy this card as well ONSdigital/ras-frontstage#1016. Add some enrolment data to your account, acceptance tests could be used, but you might want to add another IAC as well. If it logs in you are good. Also check you can access a eq, download and upload a seft. Equally you can just call the endpoints on this service

N.B there is a chart addition so you will need to deploy this via helm or provide the survey_url env. (i.e helm install party ./_infra/helm/party) don't forget if you already have a party service deployed via spinnaker you will need to kill the current deployments, service etc

kubectl delete service party --namespace <your namespace>
kubectl delete cronjob party-scheduler-delete-respondents --namespace <your namespace>
kubectl delete cronjob party-scheduler-remove-expired-pending-surveys --namespace <your namespace>
kubectl delete externalsecret party --namespace <your namespace>

[matthew-robinson-ons]

Functions properly, no issues with the suggested code changes

[SteveScorfield]

/deploy scorfs

[ras-rm-pr-bot]

Deploying to dev cluster with following parameters:

• namespace: scorfs

• tag: pr-449

• configBranch: main

• paramKey: ``

• paramValue: ``

[SteveScorfield]

Changes look fine and tests all okay. Approved