.idea/hydra.xml

After upgrading to IDEA 2017.3.4 I have found a new file in the .idea folder: hydra.xml. I haven't found any information in the internet about this file. Its contents:

<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
 <component name="HydraSettings">
 <option name="projectRoot" value="C:\Some\absolute\path\to\my\project" />
 </component>
</project>

What is this? Should it be added to VCS or ignored?

Note that it contains absolute path to my project (should I report an issue?).

P.S. IDEA also created new file codeStyles/Project.xml - it is just a new project code style settings file, see https://confluence.jetbrains.com/display/IDEADEV/New+project+code+style+settings+format+in+2017.3.