Don't count Custom Resources if not enabled at NIC startup

[jjngx]

Proposed changes

This PR fixes issue caused by attempts to count custom resources when CRs are disabled.

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

[AlexFenlon]

Here is some testing -
In main, we get this output when CRDs are disabled
In this test I am currently using the helm value --set controller.enableCustomResources=false \ to disable CRds.
This loop happens when NIC gets to collecting telemetry and fails to do so resulting in this loop
Here is the output in Main -

E0614 09:32:13.150502       1 runtime.go:79] Observed a panic: "invalid memory address or nil pointer dereference" (runtime error: invalid memory address or nil pointer dereference)
goroutine 1721 [running]:
k8s.io/apimachinery/pkg/util/runtime.logPanic({0x1eee0e0, 0x38797d0})
	k8s.io/[email protected]/pkg/util/runtime/runtime.go:75 +0x85
k8s.io/apimachinery/pkg/util/runtime.HandleCrash({0x0, 0x0, 0xc000582c40?})
	k8s.io/[email protected]/pkg/util/runtime/runtime.go:49 +0x6b
panic({0x1eee0e0?, 0x38797d0?})
	runtime/panic.go:770 +0x132
github.com/nginxinc/kubernetes-ingress/internal/k8s.(*LoadBalancerController).getAllPolicies(0xc0006ca008)
	github.com/nginxinc/kubernetes-ingress/internal/k8s/controller.go:3483 +0xbe
github.com/nginxinc/kubernetes-ingress/internal/telemetry.(*Collector).PolicyCount(0xc0000ed600)
	github.com/nginxinc/kubernetes-ingress/internal/telemetry/cluster.go:170 +0x45
github.com/nginxinc/kubernetes-ingress/internal/telemetry.(*Collector).BuildReport(_, {_, _})
	github.com/nginxinc/kubernetes-ingress/internal/telemetry/collector.go:257 +0x139c
github.com/nginxinc/kubernetes-ingress/internal/telemetry.(*Collector).Collect(0xc0000ed600, {0x26eb370, 0xc0004de410})
	github.com/nginxinc/kubernetes-ingress/internal/telemetry/collector.go:110 +0xd0
k8s.io/apimachinery/pkg/util/wait.JitterUntilWithContext.func1()
	k8s.io/[email protected]/pkg/util/wait/backoff.go:259 +0x1f
k8s.io/apimachinery/pkg/util/wait.BackoffUntil.func1(0x30?)
	k8s.io/[email protected]/pkg/util/wait/backoff.go:226 +0x33
k8s.io/apimachinery/pkg/util/wait.BackoffUntil(0xc00093bf08, {0x26c7d60, 0xc000762090}, 0x1, 0xc00034e540)
	k8s.io/[email protected]/pkg/util/wait/backoff.go:227 +0xaf
k8s.io/apimachinery/pkg/util/wait.JitterUntil(0xc000087f08, 0x4e94914f0000, 0x3fb999999999999a, 0x1, 0xc00034e540)
	k8s.io/[email protected]/pkg/util/wait/backoff.go:204 +0x7f
k8s.io/apimachinery/pkg/util/wait.JitterUntilWithContext({0x26eb370, 0xc0004de410}, 0xc000087f98, 0x4e94914f0000, 0x3fb999999999999a, 0x1)
	k8s.io/[email protected]/pkg/util/wait/backoff.go:259 +0x93
github.com/nginxinc/kubernetes-ingress/internal/telemetry.(*Collector).Start(...)
	github.com/nginxinc/kubernetes-ingress/internal/telemetry/collector.go:103
github.com/nginxinc/kubernetes-ingress/internal/k8s.(*LoadBalancerController).Run.func3({0x26eb370?, 0xc0004de410?})
	github.com/nginxinc/kubernetes-ingress/internal/k8s/controller.go:745 +0xd7
created by github.com/nginxinc/kubernetes-ingress/internal/k8s.(*LoadBalancerController).Run in goroutine 1
	github.com/nginxinc/kubernetes-ingress/internal/k8s/controller.go:742 +0x61e
panic: runtime error: invalid memory address or nil pointer dereference [recovered]
	panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x38 pc=0x1c4201e]

while running the same helm build in this branch/pr it works just fine! resulting in the output below as expected!

I0614 09:28:56.826520       1 collector.go:112] Collecting telemetry data
I0614 09:28:57.329037       1 collector.go:163] Telemetry data collected: {Data:{ProjectName:NIC ProjectVersion:3.6.0-SNAPSHOT ProjectArchitecture:amd64 ClusterID:3d306033-5883-4901-9ffe-90db11840349 ClusterVersion:v1.30.0 ClusterPlatform:other InstallationID:79d96e10-d5ea-45c6-9e72-8adfe7e18bf5 ClusterNodeCount:1} NICResourceCounts:{VirtualServers:0 VirtualServerRoutes:0 TransportServers:0 Replicas:1 Secrets:0 ClusterIPServices:2 NodePortServices:0 LoadBalancerServices:1 ExternalNameServices:0 RegularIngressCount:0 MasterIngressCount:0 MinionIngressCount:0 IngressClasses:1 AccessControlPolicies:0 RateLimitPolicies:0 JWTAuthPolicies:0 BasicAuthPolicies:0 IngressMTLSPolicies:0 EgressMTLSPolicies:0 OIDCPolicies:0 WAFPolicies:0 GlobalConfiguration:false IngressAnnotations:[] AppProtectVersion: IsPlus:true InstallationFlags:[-nginx-plus=true -nginx-reload-timeout=60000 -enable-app-protect=false -enable-app-protect-dos=false -nginx-configmaps=default/my-release-nginx-ingress -ingress-class=nginx -health-status=false -health-status-uri=/nginx-health -nginx-debug=false -v=3 -nginx-status=true -nginx-status-port=8080 -nginx-status-allow-cidrs=127.0.0.1 -report-ingress-status -external-service=my-release-nginx-ingress-controller -enable-leader-election=true -leader-election-lock-name=nginx-ingress-leader -enable-prometheus-metrics=true -prometheus-metrics-listen-port=9113 -prometheus-tls-secret= -enable-service-insight=false -service-insight-listen-port=9114 -service-insight-tls-secret= -enable-custom-resources=false -enable-snippets=true -include-year=false -disable-ipv6=false -ready-status=true -ready-status-port=8081 -enable-latency-metrics=false -ssl-dynamic-reload=true -enable-telemetry-reporting=true -weight-changes-dynamic-reload=false]}}