KNOX-3360: create-k8s-alias command to save aliases from k8s secrets

[hanicz]

KNOX-3360 - New KnoxCLI command to save alias from k8s secret

What changes were proposed in this pull request?

• New KnoxCLI command create-k8s-alias that adds k8s secrets as aliases
• It can take multiple secret names at the same time, optional --ns or --namespace flag to specify where the secrets live, it defaults to knox
• The secret has to have the below structure, topology is optional and it defaults to __gateway

  alias.name: ...
  topology: ...
  alias.value: ...

How was this patch tested?

Unit tests, tested on local kind cluster

Secrets

apiVersion: v1
kind: Secret
metadata:
  name: stringdatasecret
  namespace: knox
type: Opaque
stringData:
  alias.name: my-alias2
  topology: sandbox
  alias.value: s3cr3t
---
apiVersion: v1
kind: Secret
metadata:
  name: datasecret
  namespace: knox
type: Opaque
data:
  alias.name: bXktYWxpYXM=
  alias.value: czNjcjN0

./knoxcli.sh create-k8s-alias stringdatasecret datasecret

Integration Tests

N/A

UI changes

N/A

[github-actions]

Test Results

28 tests   28 ✅  3s ⏱️
 1 suites   0 💤
 1 files     0 ❌

Results for commit 5d2be2e.

♻️ This comment has been updated with latest results.

[moresandeep]

Few things:

1. I added my observation regarding secret.getData() on the review the other two below are minor nits.
2. in case of batch/bulk mode if secret-a succeeds and secret-b fails looks like secret-a’s alias will be persisted with no rollback, is this expected?
3. I think we'll need a DOC jira for this :)

[hanicz]

Few things:

1. I added my observation regarding secret.getData() on the review the other two below are minor nits.
2. in case of batch/bulk mode if secret-a succeeds and secret-b fails looks like secret-a’s alias will be persisted with no rollback, is this expected?
3. I think we'll need a DOC jira for this :)
   @moresandeep

1. As explained in my response the secret is converted into data and base64 encoded so I think the solution is correct. Tested with both stringData and data.
2. I added a secret validation.
3. I'll open a DOC jira.

[moresandeep]

Looks good, thanks!