Because of security permissions that we do not grant to the AWS SDK (for
use in discovery-ec2 and repository-s3 plugins), certain calls in the
AWS SDK will lead to security exceptions that are logged at the warning
level. These warnings are noise and we should suppress them. This commit
adds plugin log configurations for discovery-ec2 and repository-s3 to
ship with default Log4j 2 configurations that suppress these log
warnings.
Relates #20313
Jason Tedor