Adding helper for profile credential provider that allows passing profile name

[kiiadi]

Description

Rather than having to call ProfileCredentialsProvider.builder.profileName("blah").build() one can now call : ProfileCredentialsProvider.create("blah")

Motivation and Context

Seemed like a common enough use-case to warrant a helper method.

Testing

Added new unit test

Types of changes

• New feature (non-breaking change which adds functionality)

Checklist

• I have read the CONTRIBUTING document
• Local run of mvn install succeeds
• My code follows the code style of this project
• My change requires a change to the Javadoc documentation
• I have updated the Javadoc documentation accordingly
• I have read the README document
• I have added tests to cover my changes
• All new and existing tests passed
• A short description of the change has been added to the CHANGELOG

License

• I confirm that this pull request can be released under the Apache 2 license

[spfink]

after you fix your test

[millems]

This won't work after #296. I'd recommend against merging so that customers don't rely on it.

[kiiadi]

@millems as discussed offline - this should still work after #296 are you OK for me to merge?

[millems]

Sure!