CORTX-32157: Refactor client Chart values

[keithpine]

Description

Refactor the Chart values for the (Motr) client component.

• Remove redundant "cortx" prefix
• Use camelcase to match Helm conventions
• Convert image into an object. Tag is undefined and will default to the Chart AppVersion value.
• Default to the real CORTX client image, instead of centos.
• Allow imagePullPolicy to be configurable

Type of change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds new functionality)
• Breaking change (bug fix or new feature that breaks existing functionality)
• Third-party dependency update
• Documentation additions or improvements
• Code quality improvements to existing code or test additions/updates

Applicable issues

• This change fixes an issue: CORTX-32157
• This change is related to an issue: #

How was this tested?

Deployed cluster, with and without Client enabled. Ran m0 client in container.

Ran helm template and saw default values, like the image, being correctly configured.

Checklist

• The change is tested and works locally.
• New or changed settings in the solution YAML are documented clearly in the README.md file.
• All commits are signed off and are in agreement with the CORTX Community DCO and CLA policy.

If this change requires newer CORTX or third party image versions:

• The image fields in solution.example.yaml have been updated to use the required versions.
• The appVersion field of the Helm chart has been updated to use the new CORTX version.

If this change addresses a CORTX Jira issue:

• The title of the PR starts with the issue ID (e.g. CORTX-XXXXX:)

[osowski]

lgtm