chore(node-analyzer): Improve template to reflect eveEnabled settings in CM

[airadier]

What this PR does / why we need it:

As discussed in an internal escalation. Although we consider that manually updating a Configmap after rendering helm templates should be avoided, this change reflects the value of eveEnabled in the configmap variables instead of hardcoding to "true". This allows disabling / enabling eve integration just by updating the configmap.

Checklist

[Place an '[x]' (no spaces) in all applicable fields. Please remove unrelated fields.]

• Title of the PR starts with type and scope, (e.g. feat(agent,node-analyzer,sysdig-deploy):)
• Chart Version bumped for the respective charts
• Variables are documented in the README.md (or README.tpl in some charts)
• Check GithubAction checks (like lint) to avoid merge-check stoppers
• All test files are added in the tests folder of their respective chart and have a "_test" suffix

Check Contribution guidelines in README.md for more insight.

[github-actions]

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All good!