Replace aws-java-sdk with fine-grained plugin

[Vlatombe]

Downstream PR of

• Replace heavyweight aws-java-sdk with fine-grained aws-java-sdk-ec2 aws-credentials-plugin#93

• Make sure you are opening from a topic/feature/bugfix branch (right side) and not your main branch!
• Ensure that the pull request title represents the desired changelog entry
• Please describe what you did
• Link to relevant issues in GitHub or Jira
• Link to relevant pull requests, esp. upstream and downstream changes
• Ensure you have provided tests - that demonstrates feature works or fixes the issue

[Vlatombe]

@jglick could you review this?

[jglick]

What is this for? Something we can address in bom?

[Vlatombe]

enforcer error without it is

Require upper bound dependencies error for joda-time:joda-time:2.8.1 paths to dependency are:
+-io.jenkins.plugins:aws-global-configuration:1.7-SNAPSHOT
  +-org.jenkins-ci.plugins.aws-java-sdk:aws-java-sdk-minimal:1.12.70
    +-com.amazonaws:aws-java-sdk-core:1.12.70
      +-joda-time:joda-time:2.8.1
and
+-io.jenkins.plugins:aws-global-configuration:1.7-SNAPSHOT
  +-io.jenkins.configuration-as-code:test-harness:1.52
    +-com.github.erosb:everit-json-schema:1.13.0
      +-com.damnhandy:handy-uri-templates:2.1.8
        +-joda-time:joda-time:2.10.2

[jglick]

Hmm, so I think we need to add at least aws-java-sdk-minimal to the bom.