Feature/167 Add service template variable

[santi-eidu]

Requirements

• Filling out the template is required. Any pull request that does not include enough information to be reviewed in a timely manner may be closed at the maintainers' discretion.
• All new code requires tests to ensure against regressions
• Remember to set idealista:develop as base branch;

Description of the Change

Add service template variable.

Benefits

Possibility of edit the service configuration from playbook

Possible Drawbacks

Same default template, no Drawbacks

Applicable Issues

#167