Use as_document instead of serializable_hash
Bug 1059858 - Expose requires via REST API

Decorate cartridges properly with requires
fix https://bugzilla.redhat.com/show_bug.cgi?id=1062531
UI uses "requires" value from broker
Rename config param REGIONS_REQUIRE_FOR_APP_CREATE to ZONES_REQUIRE_FOR_APP_CREATE
Bug 1062546 - Fix unset-region in oo-admin-ctl-district
Bug 1062543 - Fix missing command validation in oo-admin-ctl-region/oo-admin-ctl-district
Compute usage multiplier
Don't override supervisor log on restart.
Bug 1062539 - UseMissingElementError as intended
Merge pull request #4689 from pravisankar/dev/ravi/misc-bugs

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Merge pull request #4692 from liggitt/usage_sync_multiplier

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Merge pull request #4690 from rajatchopra/master

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Merge pull request #4693 from mrunalp/bugs/1062270

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Merge pull request #4695 from danmcp/master

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Support changing categorizations

App create can handle requires
'maintained_by' returned by rest api on cartridges, used by UI
Bug 1057018 - More accurate message on time mismatch
Merge pull request #4697 from danmcp/master

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Bug 1055456 - Handle node env messages better
Merge pull request #4698 from danmcp/master

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