remove right for others to read the config files

[nicolasberens]

This PR Fixes: #173

[elasticmachine]

Since this is a community submitted pull request, a Jenkins build has not been kicked off automatically. Can an Elastic organization member please verify the contents of this patch and then kick off a build manually?

[elasticmachine]

Since this is a community submitted pull request, a Jenkins build has not been kicked off automatically. Can an Elastic organization member please verify the contents of this patch and then kick off a build manually?

[cla-checker-service]

❌ Author of the following commits did not sign a Contributor Agreement:
8eef34a

Please, read and sign the above mentioned agreement if you want to contribute to this project

[nicolasberens]

i signed the CLA but the bot still thinks i didn't ¯_(ツ)_/¯