Type: Bug

Component:
STS/Autoconfiguration

Describe the bug
We are only using an StsAssumeRoleCredentialsProvider to assume a role and not the StsWebIdentityTokenFileCredentialsProvider. So there is no need to provide an webIdentityTokenFile or other StsProperties.

Now the CredentialsProviderAutoConfiguration#createCredentialsProvider will log this warning because it founds the StsWebIdentityTokenFileCredentialsProvider dependency but no proper config for it:

Skipping creating `StsCredentialsProvider`. `software.amazon.awssdk:sts` is on the classpath, but neither `spring.cloud.aws.credentials.sts` properties are configured nor `AWS_WEB_IDENTITY_TOKEN_FILE` or the javaproperty `aws.webIdentityTokenFile` is set

But this config issue is only important for the case you want to use this StsWebIdentityTokenFileCredentialsProvider. So assuming we want to do the StsWebIdentityTokenFileCredentialsProvider based login only because this class is inside the class-path is not correct.

Seen in Spring AWS Cloud 3.0.1

Sample
Just put this dependency in your project and the log message will be shown:

    <dependency>
      <groupId>software.amazon.awssdk</groupId>
      <artifactId>sts</artifactId>
    </dependency>

I would suggest to only log this warning if the StsProperties are not null and an error happens.