Solve travis configuration warnings (Fix #228)

[Pablohn26]

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

I add the needed options to skip travis configuration warnings. I have used suggestions and default options that the messages mention.

Benefits

TravisCI without warnings

Possible Drawbacks

No drawbacks

Applicable Issues

#228

[Pablohn26]

I cannot add reviewers using Github web. I am going to try with Github CLI (I have never done this)