Feature Request: Custom MaxSessionDuration

[NiKlimenko]

Currently, the default value for the MaxSessionDuration setting is 1 hour. While this may be sufficient for most integrations, for longer integrations it would be vital to specify a custom session duration.

AWS doc: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-iam-role.html#cfn-iam-role-maxsessionduration

[kaizencc]

Great! @NiKlimenko are you willing to contribute this?