TestAzure Failure in Vault 1.9.0

[colin-pm]

Vault 1.9.0 introduced the following errors in test_azure.py. Creating an issue to track the resolution of these failures.

FAILED tests/integration_tests/api/secrets_engines/test_azure.py::TestAzure::test_delete_config_0_create_and_then_delete_config - AssertionError: '' != 0

[colin-pm]

This error is due to the addition of two new parameters returned by reading the Azure configuration in Vault 1.9.0, root_password_ttl and use_microsoft_graph_api, which do not return empty strings.

While working on this, I discovered that root_password_ttl returns an int with value 0 instead of a string like the docs type hint describes.
https://www.vaultproject.io/api-docs/secret/azure#root_password_ttl

I reported this issue upstream in hashicorp/vault#17115, but will push up a modifications to the failed test to handle this change.