Closes #13492 (cherry picked from commit 1e233b4) (cherry picked from commit 0fe4131)
Instead of throw an exception, this change log a warning message and accept any signer type.
For aws s3 and ec2
Until now we had a cloud-aws plugin which is providing 2 disctinct features: * discovery on EC2 * snapshot/restore on S3 This commit splits the plugin by feature so people can use either one or the other or both features. Doc is updated accordingly.
David Pilato
Ryan Ernst
xuzha