README Update: Missing Support Information for S3 Role

[sujeetkjha]

Description of the Bug:

The current README file under the Roles section lists the following supported roles:

Core GPFS (roles/core_)
GUI (roles/gui_)
SMB (roles/smb_)
NFS (roles/nfs_)
Object (roles/obj_)
HDFS (roles/hdfs_)
Call Home (roles/callhome_)
File Audit Logging (roles/fal_)

However, it does not mention the S3 role, which is identified by roles/s3_*. This role should be included in the documentation as it is fully supported by the project.

Steps to Reproduce:

Open the project's README file.
Navigate to the Roles section.
Observe the absence of roles/s3_* in the list of supported roles.
Suggested Fix:

Update the README file to include the S3 role (roles/s3_*) under the supported roles section, ensuring that clients are aware of its availability.