cns: fix casually stuck wget problem when pulling controller RestAPI
Add /etc/dropbear to list of files to save to overlay
VCT: Update node base image to one that fixes many issues.
Merge branch 'testing'
cns: fix casually stuck wget problem again, increase timeout from 10 to 3600s
confine.lib: fix stuck udhcpc if lease is not optained, blocking the whole sliver allocation and node daemon process
vct_build_sliver_template()
vct: update confine-sliver experiments
Merge branch 'testing'