Migrate to 18.04 clamp nodes

As we have some issues to build clamp (python errors), we move to the 18.04 all our build nodes

Issue-ID: CLAMP-798
Signed-off-by: sebdet <sebastien.determe@intl.att.com>
Change-Id: Idb061a96bd3a84ec56bc86d78e94b0c44cc2266c
2 files changed