Extend base shell call for configuration-create to accept database configuration file

Registered by Denis M.

Extend base shell call for configuration-create to accept database configuration file as is.
For now python-troveclient has:

trove configuration-create <name> <values> --description <descr> --datastore_version <dv_id>

where <values> is a JSON structure.

It would be nice to have:

trove configuration-create <name> --from-file /etc/my.cnf --description <descr> --datastore_version <dv_id>

Blueprint information

Status:
Not started
Approver:
None
Priority:
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Drafter:
Denis M.
Direction:
Needs approval
Assignee:
None
Definition:
Drafting
Series goal:
None
Implementation:
Unknown
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