Trigger pbuilder update after creation
Trigger pbuilder update after creation

When creating a chroot we can't use https and so we can't add
deb.nodesource.com. Therefore we trigger a update immediately after
the creation.

Change-Id: I87190e66c3f3d597af7d0863f4698bbe5be31e51

sillsdev/ci-builder-scripts,sillsdev/ci-builder-scripts,sillsdev/ci-builder-scripts