dpodctl - environment var as devel-mount indicator
dpodctl - environment var as devel-mount indicator

Pass to the generator DEVEL_MOUNT=1 environment variable to indicate that the generator runs only for devel-mount, not a full image build. This eliminated DevelMountGenArgs config option and simplified generator code.

ibukanov/hippyru-dock,ibukanov/hippyru-dock,ibukanov/hippyru-dock,ibukanov/hippyru-dock,ibukanov/hippyru-dock,ibukanov/hippyru-dock