message: Update py sdk version to b04
diff: @@ -8,7 +8,7 @@ azure-arm: true
  license-header: MICROSOFT_MIT_NO_VERSION
  package-name: azure-mgmt-chaos
  namespace: azure.mgmt.chaos
  -package-version: 1.0.0b3
  +package-version: 1.0.0b4
  clear-output-folder: true
  ```
  