DSD-2635 "Fine tune included functionblocks"

Address comments from !1550 (merged)

Updated API:

GET /api/v1/installation/parameterCache
-->
{
	"data": {
		"id": "65338ec7-556e-4662-b84d-529d0bc128cb",
		"type": "parameterCache",
		"attributes": {
			"status": "stopped",
			"total": 968,
			"completed": 668,
			"completion": 57.600000000000001,
			"remainingTime": 30003.5
		},
		"included": {
			"functionBlocks": [{
				"id": "302ed89f43f02fa00002003200",
				"type": "parameterCacheFunctionBlock",
				"attributes": {
					"completion": 87
				}
			}, {
				"id": "302ed89f43f02fa00002003400",
				"type": "parameterCacheFunctionBlock",
				"attributes": {
					"completion": 35.399999999999999
				}
			}]
		}
	}
}

POST /api/v1/installation/parameterCache/update
{"mode":"slow"}