Enable disabled functional tests

[sapinb]

These test (Added in #157, #162 ) should be enabled after the following bugfixes are completed:

Tests:

• fn_mosaic_setup_concurrent
• fn_mosaic_setup_staggered

Pending fixes:

• sm-executor: stop dropping completed job results on transient apply/commit failures #153
• evaluator: combine table-transfer readiness and request into a single ReceiveGarblingTable action #154
• cac/protocol: make challenge-response completion idempotent across phase transitions #155
• job-scheduler: recover garbling sessions on worker/report failure instead of losing jobs #156

Note: To enable, remove it from disabled_tests list in functional-tests/entry.py