Implement e2e test to cover SSO integration on the extension

[danivilla9]

There is a new feature on the extension that allows the users to use SSO to configure the Sandbox connection. We need an E2E test that covers this functionality.

Related issues:

• Use Red Hat SSO session to configure Sandbox connection #156
• Add dependency to Red Hat SSO extension to Developer Sandbox package.json #696
• Update README.md with new workflow to create Developer Sandbox Connetction using Red Hat SSO #697