[CMake] fix eigen include dir on fedora 28

8 jobs for v1.1.3 in 30 minutes and 56 seconds (queued for 111 minutes and 52 seconds)
latest
Status Name Job ID Coverage
  Test
passed doc-coverage #69760

00:00:39

84.0%
passed format #69761

00:00:14

passed robotpkg-eiquadprog-16.04-debug #69755

00:00:35

passed robotpkg-eiquadprog-16.04-release #69754

00:16:27

passed robotpkg-eiquadprog-18.04-debug #69757

00:00:36

passed robotpkg-eiquadprog-18.04-release #69756

00:00:35

passed robotpkg-eiquadprog-stretch-debug #69759

00:00:40

passed robotpkg-eiquadprog-stretch-release #69758

00:13:57