[SMI] Failure of one conformance test crashes the test suite

[leecalcote]

Description
Failure of one SMI Conformance test crashes the tool and the rest of the conformance tests. The tool exits without cleaning up, but leaves resources orphaned. Instead the program should cleanup any test resources before exiting.

Expected Behavior
It makes sense that the tool might have a cascading failure for one set of tests, because one test builds on another within a set, but the tool shouldn't crash. Other test sets should continue to execute. Test resources should not be orphaned.

Environment:

• Version: meshery-osm adapter v0.1.4