chart, salt: Add annotations to fluent-bit pod

[eg-ayoub]

What/How: Add annotations containing configmap and secret to fluent-bit pod
Why: so it is restarted whenever these objects are updated.

MK8S-203

[bert-e]

Hello eg-ayoub,

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[bert-e]

Waiting for approval

The following approvals are needed before I can proceed with the merge:

• the author

• 2 peers

Peer approvals must include at least 1 approval from the following list:

• @thomasdanan

• @TeddyAndrieux

• @eg-ayoub

• @ChengYanJin

• @g-carre

• @m4nch0t

• @vdaviot

• @ezekiel-alexrod

• @anthony-treuillier-scality

• @JBWatenbergScality

[claude]

• CHANGELOG.md: Typo — "it's" should be "its" (possessive form)
  - Replace "it's configmap" with "its configmap"
  
  Review by Claude Code

[claude]

LGTM

The changes correctly replace the static (and useless) checksum annotation and the prometheus annotations with dynamic Salt slot-based digests for the ConfigMap and Secret, following the same established pattern used in calico and kube-proxy. The data: {} addition to the initial Secret manifest ensures get_object_digest(path="data") won't fail on first deployment. Prometheus scraping is already covered by the ServiceMonitor, so removing the prometheus.io/* annotations has no functional impact.

Review by Claude Code