tests: rename "test-snapd-sh" in smoke test to test-snapd-sandbox
Rename the local test-snapd-sh snap used in tests/smoke/sandbox
to test-snapd-sandbox to avoid confusion with the test-snapd-sh
snap that is in the store.
tests: remove "test-snapd-tools" in smoke/sandbox on restore
In the autopkgtest environment we do not run any suite prepare
or restore scripts. The smoke tests run on a pristine environment
and the spread.yaml is generated from the d/tests/integrationtest
script. This means that each test must remove any snaps it installed
in the "restore" stanza.
This fixes a rather strange error in the autopkgtest run on 20.04
where we have a test-snapd-sh installed from the "sandbox" suite.
But this test-snapd has a different interface than the test-snapd-sh
from the store.
Display the device node in the gadget vs device consistency test error
message instead of filesystem label, which can not be set in offending
partitions.
