[super-agent] Add tests to the pre-install job

[kang-makes]

Is this a new chart

No

What this PR does / why we need it:

Chart with missing values is redering while it should fail.

Checklist

• Chart Version bumped
• Variables are documented in the README.md
• Title of the PR starts with chart name (e.g. [mychartname])

[paologallinaharbur]

I am adding as well some small fixes:

• the job serviceAccount and roleBinding are missing the hook pre-updagrade
• the way we are mounting the volume now is leading to an issue:

        message: 'failed to create task for container: failed to create shim task:
          OCI runtime create failed: runc create failed: unable to start container
          process: error during container init: error mounting "/var/lib/kubelet/pods/d7822316-18c0-450d-8f8c-b3d6017dd0b8/volume-subpaths/auth-secret-private-key/super-agent-deployment/2"
          to rootfs at "/etc/newrelic-super-agent/keys/from-secret.key": mount /var/lib/kubelet/pods/d7822316-18c0-450d-8f8c-b3d6017dd0b8/volume-subpaths/auth-secret-private-key/super-agent-deployment/2:/etc/newrelic-super-agent/keys/from-secret.key
          (via /proc/self/fd/6), flags: 0x5001: not a directory: unknown: Are you
          trying to mount a directory onto a file (or vice-versa)? Check if the specified
          host path exists and is the expected type'

• organization_id -> organizationId in values.yaml
• secret deletion fails since the service account did not have enough permissions
• the injection of boolean env-vars does not work, since the super agents substitute "true" instead of true

[sigilioso]

LGTM

I simply left a question in case we'd like to add a further explanation.

Thanks!