KRV-2815 : Fallback to default configuration files when installed on unsupported versions

[karthikk92]

Description

Fallback to default configuration files when installed on unsupported versions

GitHub Issues

List the GitHub issues impacted by this PR:

GitHub Issue #
dell/csm#159

Checklist:

• I have performed a self-review of my own code to ensure there are no formatting, vetting, linting, or security issues
• I have verified that new and existing unit tests pass locally with my changes
• I have not allowed coverage numbers to degenerate
• I have maintained at least 90% code coverage
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• I have maintained backward compatibility

How Has This Been Tested?

Used 1.23 k8s system for testing and while testing modified main.go file as bellow to cover scenario:

1. If the system k8s version is more than the max supported... i.e made K8sMaximumSupportedVersion = "1.22" as bellow:

and during installation, its showing proper error message like " Installed k8s version 1.23 is less than the minimum
supported k8s version 1.2200, hence using the default configurations" as bellow

2. If the system k8s version is less than the min supported... i.e made K8sMinumumSupportedVersion = "1.24" as bellow :

    and during installation, its showing proper error message like " Installed k8s version 1.23 is less than the minimum 

supported k8s version 1.2400, hence using the latest configurations" as bellow

3. If the system k8s version is within the range of min and max supported version than it will proceed installation without any messages as expected.