AWS STS dependency is required to allow WebToken / Kubernetes AWS IRSA support

[nhoughto]

Solved my problem from #34, the problem was that even though the gradle job should have access to S3 to GET/PUT etc, it was being denied because it couldn't use its AWS WebToken effectively, only because the STS jar wasn't on the classpath.

So if you add it as a dependency it will work:

classpath 'com.amazonaws:aws-java-sdk-sts:1.11.751'

Warning is:
Unable to load credentials from WebIdentityTokenCredentialsProvider: To use assume role profiles the aws-java-sdk-sts module must be on the class path.

IRSA is a growing pattern with AWS Kubernetes deployments where it uses an OIDC flow to authenticate:

https://aws.amazon.com/blogs/opensource/introducing-fine-grained-iam-roles-service-accounts/

[artem-emelin]

@nhoughto
Could you please clarify where did you add classpath 'com.amazonaws:aws-java-sdk-sts:1.11.751' to (which file/section)?

[nhoughto]

In my local gradle file, if you added it to the build.gradle of this project it would save other users of the plugin from the same trap

[nhoughto]

happy to PR if welcome, my other PR been open for a while so not sure if PRs are going to be accepted for not.