[MESOS-4435] Update `Master::Http::stateSummary` to use `jsonify`.

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.24.2, 0.25.1, 0.26.1, 0.27.1, 0.28.0
• Component/s: master
• Target Version/s: 0.28.0
• Epic Link: json-perf
• Sprint: Mesosphere Sprint 26, Mesosphere Sprint 27
• Story Points: 3
• Assignee: Michael Park
• Reporter: Michael Park
• Shepherd: Joris Van Remoortere
• Created: 20/Jan/16 00:05
• Updated: 27/Feb/16 00:23
• Resolved: 01/Feb/16 04:35

Description

Update state-summary to use jsonify to stay consistent with state HTTP endpoint.