Add helm dependencies to Dockerfile

[kovayur]

Description

Fleetshard operator lacks external secrets dependency in the image. The following changes have been added:

1. Add the external secrets dependency secrets operator can’t work without the external secrets dependency
2. Delete the default securityContext.runAsUser from the subchart. External secrets operator sets user id as 1000 by default which is prohibited by openshift (without extra scc config). If you delete the key then openshift assigns a user id from a range, so from security perspective it should be better. The null value I set for securityContext.runAsUser in root values.yaml works in helm but not in the operator. Most likely because the older version of helm is used in operator-sdk. I submitted a bug report to operator sdk and made a workaround to remove the default key(s) from the dependency.

Checklist (Definition of Done)

• Unit and integration tests added
• Added test description under Test manual
• Documentation added if necessary (i.e. changes to dev setup, test execution, ...)
• CI and all relevant tests are passing
• Add the ticket number to the PR title if available, i.e. ROX-12345: ...
• Discussed security and business related topics privately. Will move any security and business related topics that arise to private communication channel.
• Add secret to app-interface Vault or Secrets Manager if necessary
• RDS changes were e2e tested manually
• Check AWS limits are reasonable for changes provisioning new resources

Test manual

TODO: Add manual testing efforts

# To run tests locally run:
make db/teardown db/setup db/migrate
make ocm/setup OCM_OFFLINE_TOKEN=<ocm-offline-token> OCM_ENV=development
make verify lint binary test test/integration

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ebensh, kovayur

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