Add Oozie prepare elements to UI/API

Registered by Trevor McKay

The workflow generation in Oozie currently supports prepare elements at the lowest levels, but there is no support for specifying prepare elements in the UI or api.

Savanna should expose the ability to specify <prepare> tags for workflows

Related Etherpad: https://etherpad.openstack.org/p/juno-summit-sahara-edp

Blueprint information

Status:
Not started
Approver:
Sergey Lukjanov
Priority:
Medium
Drafter:
Trevor McKay
Direction:
Approved
Assignee:
Trevor McKay
Definition:
Approved
Series goal:
None
Implementation:
Not started
Milestone target:
None

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