[P3] Repair and re-enable disabled SDK unit tests

Several unit tests have been disabled until we have time to go back and update them. search for Test disabled in the repo to find them:

% git grep -l 'Test disabled'
test/unit/sdk/ai/ai.js
test/unit/sdk/ai/bosses.js
test/unit/sdk/cards/bloodstorm/faction6.js
test/unit/sdk/cards/bloodstorm/neutrals.js
test/unit/sdk/cards/core/faction2/artifacts.js
test/unit/sdk/cards/core/faction3/minions.js
test/unit/sdk/cards/core/faction5/spells.js
test/unit/sdk/cards/core/neutrals/epics.js
test/unit/sdk/cards/coreshatter/faction1.js
test/unit/sdk/cards/misc/bloodborn_spells.js
test/unit/sdk/cards/monthlies/month7.js
test/unit/sdk/cards/monthlies/month9.js
test/unit/sdk/cards/monthlies/seven_sisters.js
test/unit/sdk/cards/shimzar/battle_pets.js
test/unit/sdk/cards/shimzar/faction1.js
test/unit/sdk/cards/shimzar/faction2.js
test/unit/sdk/cards/shimzar/faction4.js
test/unit/sdk/cards/shimzar/faction5.js
test/unit/sdk/cards/unity/faction5.js
test/unit/sdk/cards/unity/faction6.js
test/unit/sdk/cards/wartech/faction2.js
test/unit/sdk/cards/wartech/faction3.js
test/unit/sdk/cards/wartech/faction4.js
test/unit/sdk/cards/wartech/faction5.js
test/unit/sdk/game/basic.js

We should revisit these and turn them back on once we get them working.