tree bb91cf81bcf5aa3c5f1026bac78ae4b4c4ae61ef
parent 1a03672434bed0ff019c1e6b97782eb5ec81c731
author Stewart Smith <stewart@linux.ibm.com> 1553658409 +1100
committer Stewart Smith <stewart@linux.ibm.com> 1553730545 +1100

ci: Use Ubuntu 18.04 rather than Ubuntu 16.04

We will soon require Ubuntu 18.04 rather than Ubuntu 16.04 for building
op-build due to a GCC6.2 requirement from glibc.

Signed-off-by: Stewart Smith <stewart@linux.ibm.com>