[feature](dcr) add kerberos support

[catpineapple]

What problem does this PR solve?

Added dcr kerberos configuration kerberosInfo, parsed and built corresponding mounts through doris-operator, and passed in environment variables to support kerberos system access:

apiVersion: doris.selectdb.com/v1
kind: DorisCluster
metadata:
  name: doriscluster-sample
spec:
  kerberosInfo:
    krb5ConfigMap: krb5-test
    keytabSecretName: keytab-secret
    keytabPath: /etc/my-keytab
  feSpec:
    replicas: 1
    ...

Problem Summary:

Release note

None

Check List (For Author)

• Test

  • Regression test
  • Unit Test
  • Manual test (add detailed scripts or steps below)
  • No need to test or manual test. Explain why:
    • This is a refactor/code format and no logic has been changed.
    • Previous test can cover this change.
    • No code files have been changed.
    • Other reason

• Behavior changed:

  • No.
  • Yes.

• Does this need documentation?

  • No.
  • Yes.

Check List (For Reviewer who merge this PR)

• Confirm the release note
• Confirm test cases
• Confirm document
• Add branch pick label

[intelligentfu8]

LGTM