Plugin Object-Update or Create Plugin

Number of APIs: 4

1. Create Or Update Plugin PUT {{gateway}}/plugins/:pluginId

2. Create Or Update Plugin Associated to a Specific Route PUT {{gateway}}/routes/:routeNameOrId/plugins/:pluginId

3. Create Or Update Plugin Associated to a Specific Service PUT {{gateway}}/services/:serviceNameOrId/plugins/:pluginId

4. Create Or Update Plugin Associated to a Specific Consumer PUT {{gateway}}/consumers/:consumerUsernameOrd}/plugins/:pluginId