update plugin with yaml tags

[kkeller-cb]

We noticed that the Account array was always empty. This pr adds yaml tags to the config structs so it populates.

[yevgenypats]

@kkeller-cb Thanks! I double tested it now and looks like some of the fields do get populated as long as you specify it in the config.yml. I did see that the RoleARN does not get populated without the tag indeed.

I think the yaml package uses a snake_case by default for the tags. Anyway to avoid bugs like with RoleARN I think it is a good practice to have the tags explicit and merge this (there is one typo in the PR though).