suspend go routines until operator cache is ready

[qpdpQ]

What this PR does / why we need it:
Go routines in ibm-common-service operator relies on operator controller's cache to be ready. It will be ready when Manager is set up. So we need to suspend go routines until manager is setup
Which issue(s) this PR fixes:
Fixes # https://github.ibm.com/IBMPrivateCloud/roadmap/issues/58246

[qpdpQ]

test logs

I1205 17:19:22.921189 1 request.go:601] Waited for 1.015067982s due to client-side throttling, not priority and fairness, request: GET:https://172.30.0.1:443/apis/velero.io/v2alpha1?timeout=32s
1.7334191651816728e+09 INFO controller-runtime.metrics Metrics server is starting to listen {"addr": ":8080"}
I1205 17:19:25.182289 1 main.go:131] Identifying Common Service Operator Role in the namespace mcsp
I1205 17:19:25.273543 1 init.go:160] Single Deployment Status: false, MultiInstance Deployment status: true, SaaS Depolyment Status: false
I1205 17:19:33.040389 1 request.go:601] Waited for 1.043724581s due to client-side throttling, not priority and fairness, request: GET:https://172.30.0.1:443/apis/foundation.ibm.com/v1?timeout=32s
I1205 17:19:35.343215 1 operator_status.go:39] start update CSCR
I1205 17:19:42.049930 1 operator_status.go:42] Get bs from channel
1.7334191820499256e+09 INFO controller-runtime.webhook Registering webhook {"path": "/validate-operator-ibm-com-v3-commonservice"}
1.7334191820506086e+09 INFO controller-runtime.webhook Registering webhook {"path": "/mutate-operator-ibm-com-v1alpha1-operandrequest"}
I1205 17:19:42.050701 1 main.go:245] Starting manager

it takes about 7 seconds to wait

I1205 17:19:35.343215 1 operator_status.go:39] start update CSCR
I1205 17:19:42.049930 1 operator_status.go:42] Get bs from channel

[qpdpQ]

test looks good to me:

I1209 19:40:32.208551 1 request.go:601] Waited for 1.003899204s due to client-side throttling, not priority and fairness, request: GET:https://172.30.0.1:443/apis/ceph.rook.io/v1?timeout=32s
1.7337732344705563e+09 INFO controller-runtime.metrics Metrics server is starting to listen {"addr": ":8080"}
I1209 19:40:34.471243 1 main.go:131] Identifying Common Service Operator Role in the namespace mcsp
I1209 19:40:34.564602 1 init.go:160] Single Deployment Status: false, MultiInstance Deployment status: true, SaaS Depolyment Status: false
I1209 19:40:42.332863 1 request.go:601] Waited for 1.042902052s due to client-side throttling, not priority and fairness, request: GET:https://172.30.0.1:443/apis/imageregistry.operator.openshift.io/v1?timeout=32s
I1209 19:40:44.635814 1 main.go:166] start commonservice manager
I1209 19:40:47.991087 1 main.go:176] start go routines
I1209 19:40:51.345092 1 main.go:189] Set up certmanager Manager
1.7337732513455667e+09 INFO controller-runtime.webhook Registering webhook {"path": "/validate-operator-ibm-com-v3-commonservice"}
1.733773251345751e+09 INFO controller-runtime.webhook Registering webhook {"path": "/mutate-operator-ibm-com-v1alpha1-operandrequest"}
I1209 19:40:51.345855 1 main.go:248] Starting manager
1.733773251346604e+09 INFO controller-runtime.webhook.webhooks Starting webhook server

[Daniel-Fan]

/lgtm

[ibm-ci-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Daniel-Fan, qpdpQ

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [Daniel-Fan,qpdpQ]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment