Support DUO MFA token caching under linux

[nickperrott]

We are using this provider under a Linux container and we have Snowflake MFA enabled per user using the DUO push mechanism.

Unfortunately, the provider doesn't cache the MFA token, so we are pushed a new approval request each time we run. Sometimes for multiple times per deployment.

The solution to this appears like it would be quite simple. I also had a similar issue with the Snowflake Python connector and adding the following client parameters fixed it:

• authenticator=username_password_mfa
• client_store_temporary_credential=True
• client_request_mfa_token=True

From a quick look at the design of the provider, it appears that it would be quite straight-forward to also add these parameters to the provider.

[sfc-gh-dszmolka]

(first the underlying gosnowflake connector needed capability to support connection/mfa caching. this has been added ~3 weeks back and released with 1.6.17)