sdk/auth: loginEndpoint in secure cloud contains unhandled trailing slash

[bmoylan]

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Service Used

Metadata Service's loginEndpoint

API Versions Used

2022-09-01

Description

In the usssec Azure cloud, the loginEndpoint in the response from /metadata/endpoints?api-version=2022-09-01 includes a trailing slash that the SDK and tests do not expect. This causes sdk/auth's ClientSecretAuthorizer and ClientCertificateAuthorizer to use a double-slash after appending their own leading slash for the required endpoint. Thus the terraform provider can not successfully log in with OIDC.

#1148 is a potential solution: by using the standard library's url.JoinPath, the SDK will clean unexpected double slashes and use a correct URL irrespective of the structure of the loginEndpoint.

References

No response