cstor-operator doesn't have an option to enable core dump for cStor pools and target

[mittachaitu]

Description

cStor operator is responsible for maintaining the life cycle of
cStor-pool pods and CStorPoolInstance resource it has to
provide a mechanism to enable core dump for cStor pools and target.
Here is a link to the issue card.

Context

If there is a crash in the pool/target process core dump is much essential
to dig deeper into the problem. As of now, to enable core dump ENABLE_COREDUMP
env should be set to true in the pool and target deployments.

Possible Solution

• Enabling core dump in the pool can be achieved by adding a field under PoolConfig.
  cStor-operator will set ENABLE_COREDUMP env on deployment if enableCoreDump
  field is configured on CStorPoolCluster.
• Enabling core dump in the target can be achieved by adding a field under targetSpec. CVC-Operator will set ENABLE_COREDUMP env
  on deployment, if the field is configured on policy.