Enhancement

[1] Update the MLFlow module, adapt to DataSphere Studio 1.1.0 version. #69

[2] Update the Prophecis appconn , adapt to DataSphere Studio 1.1.0 version. #69

[3] Update MLFlow user_manual. #69

Bugfix

[1] Fix the error of model list interface. #64

[2] Fix some wrong variables in helm chart installation. #59