feat: update .gitignore and add upgrade testing documentation

Author: SatabdiG

.gitignore

@@ -17,6 +17,12 @@ dev.env
 secrets.env
 *~
 /test/e2e/logs/
+# Environment files with secrets
+.env
+test/**/.env
+test/upgrade/.env
+
+# Upgrade Test artifacts
+test-upgrade-output.log
 test/upgrade/logs/
-test/upgrade/env.txt
-test/upgrade/upgrade.test
+

README.md

@@ -69,7 +69,7 @@ kind delete cluster <cluster-name>
 
 ### Upgrade Tests
 
-The provider comes with a set of upgrade tests that can be run locally. To learn more about it : [Upgrade Tests README](./test/upgrade/README.md).
+The provider comes with a set of upgrade tests that can be run locally. To learn more about it : [Upgrade Tests README](./docs/upgrade-testing.md).
 
 #### Required Configuration
 In order for the tests to perform successfully some configuration need to be present as environment variables: