fix config fetcher flush the rules

[aheizi]

What type of PR is this?

fix config fetcher flush the rules when prometheus-adapter-config only configure rules and externalRules

What this PR does / why we need it:

1. Crane will not crash if only ResourceRules are configured and others are not.
2. Decouple the refresh of ResourceRules, CustomerRules, and ExternalRules, so that if one of them has a problem, it will not affect the others.

Which issue(s) this PR fixes:

Fixes #829

Special notes for your reviewer:

[github-actions[bot]]

🎉 Successfully Build Images. Now Support ARM Platforms. Comment Post Time: 2023-07-03 19:04 Git Version: ad2da61

Docker Registry

Overview: https://hub.docker.com/u/gocrane

Image	Pull Command
crane-agent:pr-830-ad2da61	docker pull gocrane/crane-agent:pr-830-ad2da61
dashboard:pr-830-ad2da61	docker pull gocrane/dashboard:pr-830-ad2da61
metric-adapter:pr-830-ad2da61	docker pull gocrane/metric-adapter:pr-830-ad2da61
craned:pr-830-ad2da61	docker pull gocrane/craned:pr-830-ad2da61

Quick Deploy - Helm

helm repo add crane https://finops-helm.pkg.coding.net/gocrane/gocrane
helm install crane -n crane-system --create-namespace \
                   --set craned.image.repository=gocrane/craned \
                   --set craned.image.tag=pr-830-ad2da61 \
                   --set metricAdapter.image.repository=gocrane/metric-adapter \
                   --set metricAdapter.image.tag=pr-830-ad2da61 \
                   --set craneAgent.image.repository=gocrane/crane-agent \
                   --set craneAgent.image.tag=pr-830-ad2da61 \
                   --set cranedDashboard.image.repository=gocrane/dashboard \
                   --set cranedDashboard.image.tag=pr-830-ad2da61 crane/crane

---

Coding Registry

Overview: https://finops.coding.net/public-artifacts/gocrane/crane/packages

Image	Pull Command
crane-agent:pr-830-ad2da61	docker pull finops-docker.pkg.coding.net/gocrane/crane/crane-agent:pr-830-ad2da61
dashboard:pr-830-ad2da61	docker pull finops-docker.pkg.coding.net/gocrane/crane/dashboard:pr-830-ad2da61
metric-adapter:pr-830-ad2da61	docker pull finops-docker.pkg.coding.net/gocrane/crane/metric-adapter:pr-830-ad2da61
craned:pr-830-ad2da61	docker pull finops-docker.pkg.coding.net/gocrane/crane/craned:pr-830-ad2da61

Quick Deploy - Helm

helm repo add crane https://finops-helm.pkg.coding.net/gocrane/gocrane
helm install crane -n crane-system --create-namespace \
                   --set craned.image.repository=finops-docker.pkg.coding.net/gocrane/crane/craned \
                   --set craned.image.tag=pr-830-ad2da61 \
                   --set metricAdapter.image.repository=finops-docker.pkg.coding.net/gocrane/crane/metric-adapter \
                   --set metricAdapter.image.tag=pr-830-ad2da61 \
                   --set craneAgent.image.repository=finops-docker.pkg.coding.net/gocrane/crane/crane-agent \
                   --set craneAgent.image.tag=pr-830-ad2da61 \
                   --set cranedDashboard.image.repository=finops-docker.pkg.coding.net/gocrane/crane/dashboard \
                   --set cranedDashboard.image.tag=pr-830-ad2da61 crane/crane

---

Ghcr Registry

Overview: https://github.com/orgs/gocrane/packages?repo_name=crane

Image	Pull Command
crane-agent:pr-830-ad2da61	docker pull ghcr.io/gocrane/crane/crane-agent:pr-830-ad2da61
dashboard:pr-830-ad2da61	docker pull ghcr.io/gocrane/crane/dashboard:pr-830-ad2da61
metric-adapter:pr-830-ad2da61	docker pull ghcr.io/gocrane/crane/metric-adapter:pr-830-ad2da61
craned:pr-830-ad2da61	docker pull ghcr.io/gocrane/crane/craned:pr-830-ad2da61

Quick Deploy - Helm

helm repo add crane https://finops-helm.pkg.coding.net/gocrane/gocrane
helm install crane -n crane-system --create-namespace \
                   --set craned.image.repository=ghcr.io/gocrane/crane/craned \
                   --set craned.image.tag=pr-830-ad2da61 \
                   --set metricAdapter.image.repository=ghcr.io/gocrane/crane/metric-adapter \
                   --set metricAdapter.image.tag=pr-830-ad2da61 \
                   --set craneAgent.image.repository=ghcr.io/gocrane/crane/crane-agent \
                   --set craneAgent.image.tag=pr-830-ad2da61 \
                   --set cranedDashboard.image.repository=ghcr.io/gocrane/crane/dashboard \
                   --set cranedDashboard.image.tag=pr-830-ad2da61 crane/crane

[qmhu]

@aheizi I just find that this issue is already fixed by https://github.com/gocrane/crane/pull/726 but i forget to merge it(merged now), so would you please rebase latest code and check if we need to optimize it? thanks.

[aheizi]

ok，i think #726 has already solved my problem, thanks.