* feat: assume role provider credentials
This commit updates the awsutil dependency to its latest version, which
supports the capability of using dynamic credentials. The storage service
was refactored to make static credentials optional. The credentials pkg
was refactored to support several attribute fields used for the assume
role provider. The host service still enforces the use of static
credentials.
This updates the README to have full examples for both host set and host
catalog creation, and also corrects an incorrect example in the JSON
example (tag-name was supposed to be tag-key).
Additionally, I've removed the JSON example as it's no longer needed as
the CLI corrects accepts filter names with dashes with the work
performed in #2 and #4.
Michael Li
Damian Debkowski
Jeff Mitchell
Todd
Chris Marchesi