update sysutils/vagrant to 2.0.3

The port's upstream github account was changed/renamed, this is reflected
in the GH_ACCOUNT change.
Tests are not installed anymore, so pkg-plist is a lot shorter now.
The ".runner" "simple build script" is not required for the port and
installed by accident, so just rm it.

PR: 226662
Approved by: joe at thrallingpenguin com