fixing user profile schema for new keycloak

[ddelpiano]

Implemented solution

added stripe_uid to the keycloak user profile so that mnp-checkout attribute setting api call will not fail silently.
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How to test this PR

for an existing deployment delete the namespace and re-run the pipeline to deploy, check from realm settings -> user profile -> attributes if stripe_uid is present in the list of attributes

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• In this PR it is explicitly stated how to test the current change
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Breaking changes (select one):

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[filippomc]

Please reference a cloudharness Jira issue in the PR.
Removed references to an external private project