Fix /deliveryservices/{{ID}}/servers and /deliveryservices/{{ID}}/servers/eligible to use RFC3339 timestamps

[gbkannan89]

Related:#5911

---

Which Traffic Control components are affected by this PR?

• Documentation
• Traffic Ops

What is the best way to verify this PR?

Response object with date must be in RFC3339-format date strings.

In deliveryservices/{{ID}}/servers - expected lastUpdated response in RFC3339-format date strings.

HTTP/1.1 GET /api/5.0/deliveryservices/{{ID}}/servers
Content-Length: 0

{
	"response": [{
		"cachegroup": "CDN_in_a_Box_Edge",
		"cachegroupId": 7,
		"cdnId": 2,
		"cdnName": "CDN-in-a-Box",
		"domainName": "infra.ciab.test",
		"guid": null,
		"hostName": "edge",
		"httpsPort": 443,
		"id": 10,
		"iloIpAddress": "",
		"iloIpGateway": "",
		"iloIpNetmask": "",
		"iloPassword": "",
		"iloUsername": "",
		"lastUpdated": "2018-11-14T21:50:03.009954Z",
		"mgmtIpAddress": "",
		"mgmtIpGateway": "",
		"mgmtIpNetmask": "",
		"offlineReason": "",
		"physLocation": "Apachecon North America 2018",
		"physLocationId": 1,
		"profileNames": ["ATS_EDGE_TIER_CACHE"],
		"rack": "",
		"routerHostName": "",
		"routerPortName": "",
		"status": "REPORTED",
		"statusId": 3,
		"tcpPort": 80,
		"type": "EDGE",
		"typeId": 11,
		"updPending": false,
		"interfaces": [{
			"ipAddresses": [{
					"address": "172.16.239.100",
					"gateway": "172.16.239.1",
					"service_address": true
				},
				{
					"address": "fc01:9400:1000:8::100",
					"gateway": "fc01:9400:1000:8::1",
					"service_address": true
				}
			],
			"max_bandwidth": 0,
			"monitor": true,
			"mtu": 1500,
			"name": "eth0"
		}]
	}]
}

In deliveryservices/{{ID}}/servers/eligible - expected lastUpdated in response RFC3339-format date strings.

HTTP/1.1 GET /api/5.0/deliveryservices/{{ID}}/servers/eligible
Content-Length: 0

{ "response": [
    {
        "cachegroup": "CDN_in_a_Box_Edge",
        "cachegroupId": 7,
        "cdnId": 2,
        "cdnName": "CDN-in-a-Box",
        "domainName": "infra.ciab.test",
        "guid": null,
        "hostName": "edge",
        "httpsPort": 443,
        "id": 10,
        "iloIpAddress": "",
        "iloIpGateway": "",
        "iloIpNetmask": "",
        "iloPassword": "",
        "iloUsername": "",
        "lastUpdated": "2018-10-30T21:50:03.009954Z",
        "mgmtIpAddress": "",
        "mgmtIpGateway": "",
        "mgmtIpNetmask": "",
        "offlineReason": "",
        "physLocation": "Apachecon North America 2018",
        "physLocationId": 1,
        "profile": "ATS_EDGE_TIER_CACHE",
        "profileDesc": "Edge Cache - Apache Traffic Server",
        "profileId": 9,
        "rack": "",
        "routerHostName": "",
        "routerPortName": "",
        "status": "REPORTED",
        "statusId": 3,
        "tcpPort": 80,
        "type": "EDGE",
        "typeId": 11,
        "updPending": false,
        "interfaces": [{
            "ipAddresses": [
                {
                    "address": "172.16.239.100",
                    "gateway": "172.16.239.1",
                    "service_address": true
                },
                {
                    "address": "fc01:9400:1000:8::100",
                    "gateway": "fc01:9400:1000:8::1",
                    "service_address": true
                }
            ],
            "max_bandwidth": 0,
            "monitor": true,
            "mtu": 1500,
            "name": "eth0"
        }]
    }
]}

PR submission checklist

• This PR has tests
• This PR has documentation
• This PR has a CHANGELOG.md entry
• This PR DOES NOT FIX A SERIOUS SECURITY VULNERABILITY

[codecov]

Codecov Report

Merging #7660 (ad1977f) into master (75ec56f) will decrease coverage by 35.24%.
Report is 34 commits behind head on master.
The diff coverage is 8.40%.

@@              Coverage Diff              @@
##             master    #7660       +/-   ##
=============================================
- Coverage     65.05%   29.82%   -35.24%     
  Complexity       98       98               
=============================================
  Files           314      794      +480     
  Lines         12365    84943    +72578     
  Branches        907      908        +1     
=============================================
+ Hits           8044    25331    +17287     
- Misses         3968    57481    +53513     
- Partials        353     2131     +1778     

Flag	Coverage Δ
golib_unit	48.10% <0.00%> (?)
grove_unit	4.60% <ø> (?)
t3c_unit	4.95% <5.88%> (?)
traffic_monitor_unit	21.30% <0.00%> (?)
traffic_ops_integration	69.39% <86.36%> (-0.03%)	⬇️
traffic_ops_unit	22.55% <3.13%> (?)
traffic_portal_v2	73.91% <78.57%> (+0.13%)	⬆️
traffic_stats_unit	10.14% <ø> (?)
unit_tests	26.94% <6.08%> (-46.84%)	⬇️
v3	57.79% <ø> (ø)
v4	79.18% <ø> (ø)
v5	78.52% <86.36%> (-0.12%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
cache-config/t3c-apply/config/config.go	0.00% <0.00%> (ø)
cache-config/t3c-apply/t3c-apply.go	0.00% <0.00%> (ø)
...ared/navigation/tp-sidebar/tp-sidebar.component.ts	59.64% <0.00%> (-3.32%)	⬇️
...tal/traffic-portal/src/environments/environment.ts	100.00% <ø> (ø)
lib/go-tc/deliveryservice_servers.go	0.00% <0.00%> (ø)
lib/go-tc/federation_resolver.go	45.45% <0.00%> (ø)
traffic_monitor/tmclient/tmclient.go	0.00% <0.00%> (ø)
...ops/traffic_ops_golang/deliveryservice/eligible.go	55.27% <0.00%> (ø)
...fic_ops/traffic_ops_golang/deliveryservice/keys.go	31.86% <0.00%> (ø)
...ffic_ops_golang/deliveryservice/servers/servers.go	31.76% <0.00%> (ø)
... and 21 more

... and 466 files with indirect coverage changes

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[ocket8888]

Also missing the other usages in the v5 client, as well as associated testing changes

[ocket8888]

Also missing the other usages in the v5 client, as well as associated testing changes