Updates for Javaagent 2.2.0

[zeitlinger]

• Spring starter
  • document resource providers, including the spring resource providers for service.name and service.version: spring boot build info resource detector #3999
  • all of SDK auto-config available: spring starter can now use all sdk autoconfig properties #4167
  • How to add a AutoConfigurationCustomizerProvider: spring starter can now use all sdk autoconfig properties #4167
  • include dependencies for propagators: spring starter can now use all sdk autoconfig properties #4167
  • enable resource providers: how to enable Resource Providers that are disabled by default #4138

[cartermp]

Closing out, as all PRs are now merged. Thanks @zeitlinger!