PR build pipeline failure in TestClientConfigUpdateInParallel

[maralavi]

Bug description

PR build pipeline frequently fail in TestClientConfigUpdateInParallel . The same error message repeated after 6 retries of the build job:

require.go:273: 
[1752](https://github.com/vmware-tanzu/tanzu-framework/runs/7966625373?check_suite_focus=true#step:14:1753)
        	Error Trace:	/home/runner/work/tanzu-framework/tanzu-framework/pkg/v1/config/require.go:273
[1753](https://github.com/vmware-tanzu/tanzu-framework/runs/7966625373?check_suite_focus=true#step:14:1754)
        	            				/home/runner/work/tanzu-framework/tanzu-framework/pkg/v1/config/require_forward.go:250
[1754](https://github.com/vmware-tanzu/tanzu-framework/runs/7966625373?check_suite_focus=true#step:14:1755)
        	            				/home/runner/work/tanzu-framework/tanzu-framework/pkg/v1/config/clientconfig_test.go:632
[1755](https://github.com/vmware-tanzu/tanzu-framework/runs/7966625373?check_suite_focus=true#step:14:1756)
        	            				/home/runner/work/tanzu-framework/tanzu-framework/pkg/v1/config/clientconfig_test.go:646
[1756](https://github.com/vmware-tanzu/tanzu-framework/runs/7966625373?check_suite_focus=true#step:14:1757)
        	Error:      	Expected nil, but got: could not decode config file: yaml: line 66: could not find expected ':'
[1757](https://github.com/vmware-tanzu/tanzu-framework/runs/7966625373?check_suite_focus=true#step:14:1758)
        	Test:       	TestClientConfigUpdateInParallel

An example failed pipeline:
https://github.com/vmware-tanzu/tanzu-framework/runs/7927069383?check_suite_focus=true

Affected product area (please put an X in all that apply)

• ( ) APIs
• ( ) Addons
• (X) CLI
• ( ) Docs
• ( ) IAM
• ( ) Installation
• ( ) Plugin
• ( ) Security
• (X) Test and Release
• ( ) User Experience
• ( ) Developer Experience

Expected behavior

Steps to reproduce the bug

Version (include the SHA if the version is not obvious)

Environment where the bug was observed (cloud, OS, etc)

Relevant Debug Output (Logs, manifests, etc)

[vuil]

@anujc25 let's time-box this, disable the test if we don't have a solution by EOD (and continue the investigation until we resolve it) to unblock CI.