Manually provided role not updated on redeployment

[mmcdermo]

It would be handy if chalice updated the IAM role for the lambda function whenever it performs an update on the function. To demonstrate that it doesn't currently have this functionality:

If you configure chalice to use a manually provided role in config.json with:

"manage_iam_role":false
"iam_role_arn":"arn:aws:iam::<account-id>:role/<role-name>"

Then

chalice deploy

Then change the role to something else:

"iam_role_arn":"arn:aws:iam::<account-id>:role/<role-2-name>

Then deploy again:

chalice deploy

You'll see that the deployed lambda function still retains the first role. This makes sense, as only environment variables are updated inside awsclient.TypedAWSClient.update_function.

[kyleknap]

Closing issue out. It got fixed in this PR: #363. It will be available in the next chalice release.