YAML tag to disable Jinja/YAQL evaluators

Registered by Renat Akhmerov

We need to introduce YAML tags in Mistral so that we can disable evaluation of Jinja or YAQL per line in the workflow language.

More on YAML tags:
http://www.yaml.org/spec/1.2/spec.html#id2761292
https://stackoverflow.com/questions/15233335/i-dont-understand-what-a-yaml-tag-is/17192241#17192241

Blueprint information

Status:
Not started
Approver:
Renat Akhmerov
Priority:
Medium
Drafter:
Renat Akhmerov
Direction:
Approved
Assignee:
None
Definition:
New
Series goal:
None
Implementation:
Not started
Milestone target:
None

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