tox-register-sha2: load settings from envvar
tox-register-sha2: load settings from envvar

Change-Id: I323eb0707366ee18bb3bb1bf86b1098f2e1d0a17

goneri/dci-control-server,redhat-cip/dci-control-server,goneri/dci-control-server,redhat-cip/dci-control-server,enovance/dci-control-server,enovance/dci-control-server,goneri/dci-control-server,goneri/dci-control-server