Read access token to use it in authentication.

[dekiel]

Description

The access token was not passed to the sync function, this was causing creating authenticator with empty access token.

Changes proposed in this pull request:

• Extracted creating authenticator to the separate function. Created authenticator contains a key or token already.
• Sync function receive an authenticator as argument instead key or token.
• Move ginkgo tests entrypoint to the suite tests file to have one entry point for all ginkgo tests.

Related issue(s)
See: #11384

[kyma-bot]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
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