Introduce response models for operations with application/json payload

[cliffano]

All operations currently pass all responses as string.
While this is useful for xml, html, and plain text payload where processing is handled at the next layer (e.g. ruby_aem), this is not necessarily true for json payload where responses can be modelled at OpenAPI spec.

When the API introduces the model, need to also update ruby_aem to handle the model instead of json parsing.

[cliffano]

Sample payload for aem-healthcheck:
{"results":[{"name":"Smoke Health Check","status":"OK","timeMs":1}]}

[cliffano]

Sample payload for agents list:
{"jcr:primaryType":"cq:Page","jcr:mixinTypes":["rep:AccessControllable"],"jcr:createdBy":"admin","jcr:created":"Wed May 17 2017 11:19:29 GMT+1000","jcr:content":{"jcr:primaryType":"nt:unstructured","jcr:title":"Agents on author","cq:template":"/libs/cq/replication/templates/agents","sling:resourceType":"cq/replication/components/agents"},"rep:policy":{"jcr:primaryType":"rep:ACL","allow":{"jcr:primaryType":"rep:GrantACE","rep:principalName":"offloading-agentmanager","rep:privileges":["jcr:read","rep:write"]},"deny":{"jcr:primaryType":"rep:DenyACE","rep:principalName":"replication-service","rep:privileges":["crx:replicate"]}},"some-flush-agent":{"jcr:primaryType":"cq:Page","jcr:createdBy":"admin","jcr:created":"Sat Oct 21 2017 14:26:32 GMT+1100","jcr:content":{"jcr:primaryType":"nt:unstructured","jcr:mixinTypes":["cq:ReplicationStatus"],"jcr:title":"Some Flush Agent Title","enabled":"true","transportUri":"http://somehost:8080/dispatcher/invalidate.cache","cq:template":"/libs/cq/replication/templates/agent","serializationType":"flush","retryDelay":"30000","cq:lastModified":"Sat Oct 21 2017 14:26:32 GMT+1100","triggerSpecific":"true","jcr:description":"Some flush agent description","noVersioning":"true","cq:name":"some-flush-agent","protocolHTTPMethod":"GET","sling:resourceType":"cq/replication/components/agent","triggerReceive":"true","protocolHTTPHeaders":["CQ-Action:{action}","CQ-Handle:{path}","CQ-Path:{path}"],"cq:lastModifiedBy":"admin","logLevel":"error"}},"some-outbox-replication-agent":{"jcr:primaryType":"cq:Page","jcr:createdBy":"admin","jcr:created":"Sat Oct 21 2017 14:26:34 GMT+1100","jcr:content":{"jcr:primaryType":"nt:unstructured","jcr:title":"Some Outbox Replication Agent Title","enabled":"true","transportUri":"repo://var/replication/outbox","cq:template":"/libs/cq/replication/templates/agent","userId":"admin","cq:lastModified":"Sat Oct 21 2017 14:26:34 GMT+1100","triggerSpecific":"true","jcr:description":"Some outbox replication agent description","triggerDistribute":"true","noVersioning":"true","cq:name":"some-outbox-replication-agent","sling:resourceType":"cq/replication/components/agent","cq:lastModifiedBy":"admin","logLevel":"error"}},"some-replication-agent":{"jcr:primaryType":"cq:Page","jcr:createdBy":"admin","jcr:created":"Sat Oct 21 2017 14:26:37 GMT+1100","jcr:content":{"jcr:primaryType":"nt:unstructured","jcr:title":"Some replication Agent Title","enabled":"true","transportUri":"http://somehost:8080/bin/receive?sling:authRequestLogin=1","transportUser":"admin","cq:template":"/libs/cq/replication/templates/agent","serializationType":"durbo","retryDelay":"30000","cq:lastModified":"Sat Oct 21 2017 14:26:37 GMT+1100","jcr:description":"Some replication agent description","cq:name":"some-replication-agent","sling:resourceType":"cq/replication/components/agent","transportPassword":"{9228c00b6a1f122f59da03b8fceaa939f0ea8b0e6c3fc34f32d164d9822c4920}","cq:lastModifiedBy":"admin","logLevel":"error"}},"some-reverse-replication-agent":{"jcr:primaryType":"cq:Page","jcr:createdBy":"admin","jcr:created":"Sat Oct 21 2017 14:26:37 GMT+1100","jcr:content":{"jcr:primaryType":"nt:unstructured","jcr:title":"Some Reverse Replication Agent Title","enabled":"true","transportUri":"http://somehost:8080/bin/receive?sling:authRequestLogin=1","transportUser":"admin","reverseReplication":"true","cq:template":"/libs/cq/replication/templates/agent","serializationType":"durbo","retryDelay":"30000","cq:lastModified":"Sat Oct 21 2017 14:26:37 GMT+1100","jcr:description":"Some reverse replication agent description","cq:name":"some-reverse-replication-agent","sling:resourceType":"cq/replication/components/agent","transportPassword":"{06ae6c34ce617e72aa41f156b212b0fed75a2b5b2d850b06fe87481ce9aa0181}","cq:lastModifiedBy":"admin","logLevel":"error"}}}

[cliffano]

Sample payload for package filter:
{ "jcr:primaryType": "nt:unstructured", "f0": { "jcr:primaryType": "nt:unstructured", "mode": "replace", "root": "/apps/geometrixx", "rules": [] }, "f1": { "jcr:primaryType": "nt:unstructured", "mode": "replace", "root": "/apps/geometrixx-common", "rules": [] } } { "jcr:primaryType": "nt:unstructured", "f0": { "jcr:primaryType": "nt:unstructured", "mode": "replace", "root": "/apps/geometrixx", "rules": [] }, "f1": { "jcr:primaryType": "nt:unstructured", "mode": "replace", "root": "/apps/geometrixx-common", "rules": [] } }

[cliffano]

Sample payload for package service:
{"success":true,"msg":"Package created","path":"/etc/packages/somepackagegroup/somepackage-1.2.3.zip"}

[cliffano]

Sample payload for authorizable ID:
{"success":true,"results":1,"total":1,"more":false,"offset":0,"hits":[{"path":"/home/groups/s/uR7xoCS3wj_rYQ5xRClG","excerpt":"","name":"uR7xoCS3wj_rYQ5xRClG","title":"uR7xoCS3wj_rYQ5xRClG","lastModified":"2017-10-21 14:35:34","created":"2017-10-21 14:35:34"}]} {"success":true,"results":0,"total":0,"more":false,"offset":0,"hits":[]}