Describe the bug
Given

• Spring Cloud Config Server Version 4.1.3
• spring.application.name: appA,appB
• spring.profiles.active: dummy

When

• Resulting Request: http://<config server>/appA,appB/dummy (the profile name doesn't matter here, just the app names)

Then

• Against Git and Vault backends (Multiple spring application name for Vault #1356), this will return appB as propertySources[0] and appA as propertySources[1]
• Against the S3 backend, this will return appA as propertySources[0] and appB as propertySources[1]

This is a problem because:
This affects the override behavior in cases where the same value exists in both appA and appB's responses