Description of problem:
There is not any appdata.xml/metainfo.xml file available in the Arduino package. Because of this, Arduino IDE cannot be found and/or installed using the GNOME Software application or another package manager UI based on AppStream.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Open GNOME Software.
2. Type "arduino".
Not sure why this was not closed but -4 fixed the issue in F28 and F27