Mock bump issue

[mkumatag]

/kind bug
/area provider/ibmcloud

What steps did you take and what happened:
while bumping the mock to 0.5.0 version is throwing the errors, see this job for more information.

Need to asses what is required to adopt this bump.

What did you expect to happen:

Anything else you would like to add:
Already there is an issue reported here- uber-go/mock#217, will watch for more information.

Environment:

• Cluster-api version:
• Minikube/KIND version:
• Kubernetes version: (use kubectl version):
• OS (e.g. from /etc/os-release):