Changes to Create a batch fast

added the new required request property job_specs/items/job_id

added the new required request property job_specs/items/process

removed the request property job_specs/items/job_spec

added the new optional request property job_specs/items/absolute_job_group_id

added the new optional request property job_specs/items/absolute_parent_ids

added the new optional request property job_specs/items/always_copy_output

added the new optional request property job_specs/items/always_run

added the new optional request property job_specs/items/attributes

added the new optional request property job_specs/items/cloudfuse

added the new optional request property job_specs/items/env

added the new optional request property job_specs/items/in_update_job_group_id

added the new optional request property job_specs/items/in_update_parent_ids

added the new optional request property job_specs/items/input_files

added the new optional request property job_specs/items/mount_tokens

added the new optional request property job_specs/items/n_max_attempts

added the new optional request property job_specs/items/network

added the new optional request property job_specs/items/output_files

added the new optional request property job_specs/items/parent_ids

added the new optional request property job_specs/items/port

added the new optional request property job_specs/items/regions

added the new optional request property job_specs/items/requester_pays_project

added the new optional request property job_specs/items/resources

added the new optional request property job_specs/items/secrets

added the new optional request property job_specs/items/service_account

added the new optional request property job_specs/items/timeout

added the new optional request property job_specs/items/unconfined

added the new optional request property job_specs/items/user_code

added the new required request property attributes

added the new required request property billing_project

added the new required request property job_specs

added the new required request property token

request body became required

added the new optional request property callback

added the new optional request property cancel_after_n_failures

added the new optional request property job_groups

removed the request property attributes

removed the request property billing_project

removed the request property callback

removed the request property cancel_after_n_failures

removed the request property job_groups

removed the request property job_specs

removed the request property token

request body became optional