Extend ObjectStorageS3 configuration to include Token

[bsriramprasad]

Ref: https://www.onvif.org/ver10/device/wsdl/devicemgmt.wsdl

• tt:UserCredential element used to access ObjectStorageS3 has only two fields, UserName and Password. This is not enough to access an S3 Bucket through an AWS STS (Security Token Service). For this the client needs to provide
  • Access key ID (username)
  • Secret access key (password)
  • Session token

We thus propose that we add an additional field for the session token for ObjectStorageS3 storage configuration type.