feat(test): Implement a tool to verify data consistency checks across the replicas.

[mittachaitu]

What would you like to be added:

Why is this needed: This is required to check the consistency across the replicas.

Describe the solution you'd like: [A clear and concise description of what you want to happen]

• We can make use of istgtcontrol utility to implement this.

Environment:

• OpenEBS version:
• Kubernetes version (use kubectl version):
• Kubernetes installer & version:
• Cloud provider or hardware configuration:
• OS (e.g. from /etc/os-release):