Improve GHA tests steps

[cpinjani]

What does this PR do?

This implements to run tests independent of each other

Which issue(s) this PR fixes (optional, in fixes #(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):

Fixes #16

Checklist:

• GitHub Actions:
  https://github.com/rancher/hosted-providers-e2e/actions/runs/7797757146

[valaparthvi]

This is awesome! It works perfectly!

[valaparthvi]

While you are at this, can you make 2 small changes to the Makefile to allow testing rancher images like 2.7.1-head?

I ran into an error here.

 helm install rancher --devel rancher-latest/rancher --version 2.7.11-head \
	--namespace cattle-system \
	--create-namespace \
	--set global.cattle.psp.enabled=false \
	--set hostname=34.131.38.16.sslip.io \
	--set bootstrapPassword=*** \
	--set replicas=1 \
	--set rancherImageTag=v2.7.11-head \
	--wait
WARNING: Kubernetes configuration file is group-readable. This is insecure. Location: /etc/rancher/k3s/k3s.yaml
WARNING: Kubernetes configuration file is world-readable. This is insecure. Location: /etc/rancher/k3s/k3s.yaml
Error: INSTALLATION FAILED: chart "rancher" matching 2.7.11-head not found in rancher-latest index. (try 'helm repo update'): no chart version found for rancher-2.7.11-head
make: *** [Makefile:31: install-rancher] Error 1

Fixing the Makefile to remove --version flag from the helm command, seems to fix the issue. I tested it with multiple versions and image tag and it worked as expected.

See: 6b21b34