Switch to 4.18 I-builds

Change-Id: I54bbe042af8559c5ec66e0c88734dff7699ab378
Signed-off-by: Mat Booth <mat.booth@redhat.com>
Reviewed-on: https://git.eclipse.org/r/c/linuxtools/org.eclipse.linuxtools.eclipse-build/+/169515
9 files changed