Revert "Fix metrics collecting issue"

[shreyas-badiger]

Reverts #249

PR #249 breaks the build. Hence I am reverting the PR.

intuitdep4170e:upgrade-manager sbadiger$ make run
/Users/sbadiger/Work/Keiko/upgrade-manager/bin/controller-gen object:headerFile="hack/boilerplate.go.txt" paths="./..."
go fmt ./...
go vet ./...
/Users/sbadiger/Work/Keiko/upgrade-manager/bin/controller-gen "crd:trivialVersions=true,preserveUnknownFields=false" rbac:roleName=manager-role webhook paths="./..." output:crd:artifacts:config=config/crd/bases
go run ./main.go
2021-06-16T00:16:24.076-0700	INFO	main	starting watch in all namespaces
I0616 00:16:25.839004   22286 request.go:655] Throttling request took 1.003732767s, request: GET:https://eksapi-sbadiger-fe098ef1c6757396.elb.us-west-2.amazonaws.com/apis/networking.k8s.io/v1?timeout=32s
2021-06-16T00:16:34.574-0700	INFO	controller-runtime.metrics	metrics server is starting to listen	{"addr": ":8080"}
2021-06-16T00:16:34.584-0700	INFO	controllers.RollingUpgrade	setting max parallel reconcile	{"value": 10}
2021-06-16T00:16:34.584-0700	INFO	main	registering prometheus
2021-06-16T00:16:34.584-0700	INFO	main	starting manager
2021-06-16T00:16:34.585-0700	INFO	controller-runtime.manager	starting metrics server	{"path": "/metrics"}
2021-06-16T00:16:34.585-0700	INFO	controller-runtime.manager.controller.rollingupgrade	Starting EventSource	{"reconciler group": "upgrademgr.keikoproj.io", "reconciler kind": "RollingUpgrade", "source": "kind source: /, Kind="}
E0616 00:16:34.907968   22286 reflector.go:138] pkg/mod/k8s.io/client-go@v0.20.4/tools/cache/reflector.go:167: Failed to watch *v1alpha1.RollingUpgrade: failed to list *v1alpha1.RollingUpgrade: v1alpha1.RollingUpgradeList.Items: []v1alpha1.RollingUpgrade: v1alpha1.RollingUpgrade.Status: v1alpha1.RollingUpgradeStatus.LastBatchNodes: ReadMapCB: expect { or n, but found [, error found in #10 byte of ...|chNodes":["ip-10-197|..., bigger context ...|s":{"currentStatus":"completed","lastBatchNodes":["ip-10-197-115-39.us-west-2.compute.internal"],"la|...
E0616 00:16:36.606423   22286 reflector.go:138] pkg/mod/k8s.io/client-go@v0.20.4/tools/cache/reflector.go:167: Failed to watch *v1alpha1.RollingUpgrade: failed to list *v1alpha1.RollingUpgrade: v1alpha1.RollingUpgradeList.Items: []v1alpha1.RollingUpgrade: v1alpha1.RollingUpgrade.Status: v1alpha1.RollingUpgradeStatus.LastBatchNodes: ReadMapCB: expect { or n, but found [, error found in #10 byte of ...|chNodes":["ip-10-197|..., bigger context ...|s":{"currentStatus":"completed","lastBatchNodes":["ip-10-197-115-39.us-west-2.compute.internal"],"la|...
E0616 00:16:39.531119   22286 reflector.go:138] pkg/mod/k8s.io/client-go@v0.20.4/tools/cache/reflector.go:167: Failed to watch *v1alpha1.RollingUpgrade: failed to list *v1alpha1.RollingUpgrade: v1alpha1.RollingUpgradeList.Items: []v1alpha1.RollingUpgrade: v1alpha1.RollingUpgrade.Status: v1alpha1.RollingUpgradeStatus.LastBatchNodes: ReadMapCB: expect { or n, but found [, error found in #10 byte of ...|chNodes":["ip-10-197|..., bigger context ...|s":{"currentStatus":"completed","lastBatchNodes":["ip-10-197-114-250.us-west-2.compute.internal"],"l|...