Make iiif print's #im_identify command configurable

[ShanaLMoore]

Summary

hard coding the memory in the #im_identify command may be too big for the server. These settings should be configurable according to Rob.

ref:

• 🐛 Fix image processing issue iiif_print#374

cmd = "identify -limit memory 8GiB -limit map 16GiB -limit disk 50GiB -format 'Geometry: %G\nDepth: %[bit-depth]\nColorspace: %[colorspace]\nAlpha: %A\nMIME type: %m\n' #{path}"

related issue:

• Large file uploads not working under Cloudflare #856

Acceptance Criteria

• A user will be able to configure the im_identify command's resources.
• If not configured, it'll fallback to the default resources defined in its policy.xml

Screenshots or Video

Testing Instructions

To be filled out by dev

Notes