Fixingspacek8s templates

[gizas]

• Bug

What does this PR do?

Adding newline and removing space from k8s templates that are auto-generated.
The m

Why is it important?

The issue reported here
Part of elastic/kibana#181213 (comment)

How to test this PR locally

1. Clone elastic-agent repo
2. cd elastic-agent/deploy/kubernetes
3. WITHOUTCONFIG=true make generate-k8s
4. ./creator_k8s_manifest.sh .

The elastic_agent_manifest.ts should include the generated k8s template

Related issues

• Relates #Update kubernetes templates for elastic-agent kibana#181213

[mergify]

This pull request does not have a backport label. Could you fix it @gizas? 🙏
To fixup this pull request, you need to add the backport labels for the needed
branches, such as:

• backport-v./d./d./d is the label to automatically backport to the 8./d branch. /d is the digit

NOTE: backport-skip has been added to this pull request.

[elastic-sonarqube]

Quality Gate passed

Issues
0 New issues
0 Fixed issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarQube