snap: update for new snapcraft, fix old bugs#617

Closed

anonymouse64 wants to merge 3 commits intoedgexfoundry:masterfrom anonymouse64:feature/update-for-new-snapcraft

+25-19

Commits on Jul 13, 2020

edgexfoundry-snapcraft.sh: use && instead of ; between cmds
anonymouse64
committed
edgexfoundry-snapcraft.sh: also install snapd in the docker env
anonymouse64
committed
edgexfoundry-snapcraft.sh: use unbuffer w/ snapcraft
anonymouse64
committed