Fix credential assignment when using tags (#195)

[seanson]

Fixes #195

[seanson]

Tested and working locally with tag creation.

Tested and actually working locally with resource creation and editing.

[dentarg]

Looks like a regression from 4c7b852?

[tbroden84]

@seanson Thanks for the contribution. While testing and using queue_allowlist and vhost_allowlist, they also got assigned the wrong values but without any errors. This was introduced into 4c7b852. Created a new PR: #198 to handle all three optional arguments (queue_allowlist, vhost_allowlist and tags). Will close this and merge the other instead.