* Code quality improvements such -

1. Improves empty string test (len vs str == "")
2. Converts fmt.Sprintf to string literal and Printf to Print where possible (as the dynamic args are missing!)

* Delete .deepsource.toml

Co-authored-by: DeepSource Bot <bot@deepsource.io>
Co-authored-by: Liz Rice <liz@lizrice.com>

* Closes #551

* Closes #551

* Update cmd/kubernetes_version.go

Co-Authored-By: Liz Rice <liz@lizrice.com>

* Closes #551

Co-authored-by: Liz Rice <liz@lizrice.com>

* Fixes issue #517: Determines Kubernetes version using the REST API

* fixes

* fixes

* adds tests

* fixes

* added more tests

* kubernetes_version_test: Add a missing case for invalid certs

Signed-off-by: Simarpreet Singh <simar@linux.com>

* kubernetes_version_test: Remove un-needed casts

Signed-off-by: Simarpreet Singh <simar@linux.com>

* fixes as per PR review

* fixes as per PR review