Fix CCM test to make sure that load balancer service LB is deleted before cluster delete kicks in

[shyamradhakrishnan]

What happened: CCM tests gets stuck as CCM load balancer is not deleted, and hence cluster deletion gets stuck

What you expected to happen: Cluster delete should happen only after LB corresponding to LB service is deleted

How to reproduce it (as minimally and precisely as possible): Run CCM test

Anything else we need to know?:

Environment:

• CAPOCI version:
• Cluster-API version (use clusterctl version):
• Kubernetes version (use kubectl version):
• Docker version (use docker info):
• OS (e.g. from /etc/os-release):