Add ttl obj to alertmanagercfgs resource

[afzal442]

Description

Added ttl object to alertmanagerConfig resource after time to live introduction on pushoverConfig

Closes: #6360

Type of change

What type of changes does your code introduce to the Prometheus operator? Put an x in the box that apply.

• CHANGE (fix or feature that would cause existing functionality to not work as expected)
• FEATURE (non-breaking change which adds functionality)
• BUGFIX (non-breaking change which fixes an issue)
• ENHANCEMENT (non-breaking change which improves existing functionality)
• NONE (if none of the other choices apply. Example, tooling, build system, CI, docs, etc.)

Verification

Please check the Prometheus-Operator testing guidelines for recommendations about automated tests.

Changelog entry

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Added `ttl` object to alertmanagercfgs resource

[afzal442]

hello @onedr0p do wanna review here till now? I guess validation is still left. thanks

cc @slashpai

[onedr0p]

Change looks good here but I'm not a member of this org, so probably better to leave the review up to someone who is.

[afzal442]

@slashpai any review will be great.

[simonpasquier]

You also need to push the TTL value to the generated config in here

prometheus-operator/pkg/alertmanager/amcfg.go

Line 1114 in 5b880a0

func (cb *configBuilder) convertPushoverConfig(ctx context.Context, in monitoringv1alpha1.PushoverConfig, crKey types.NamespacedName) (*pushoverConfig, error) {