Added support for mounting file storage for oci job

[lu-ohai]

Added support for mounting file storage for oci job

• Added new API with_storage_mount() and storage_mount for DataScienceJob:
• Added new dataclass DSCFileStorage to hold the required arguments for file system mounting

.with_storage_mount(
    {
        "src":"100.100.86.140:/FileSystem-20230330-2239-01",
        "dest":"test_mount",
    }
)

Unit test

[mayoor]

What is the format of the dict?

Could you please add code example here?

[lu-ohai]

The format would be something as this

.with_storage_mount(
    {
        storage_type="FILE_STORAGE", 
        destination_directory_name="test_folder_name", 
        export_path="test_export_path", 
        mount_target="test_mount_target"
    },
    {
        storage_type="OBJECT_STORAGE", 
        destination_directory_name="test_folder_name", 
        namespace="test_namespace", 
        path="test_path"
    }, 
)

Two keys are required for each dict: storage_type and destination_directory_name
The other keys need to be provided based on which type of file systems users would like to mount. For file storage, these are export_path and mount_target. For object storage, these are namespace and path.
We'll have a pre-check for the keys for each type passed in so that user will be notified immediately if anything is missing or wrong.