Fix broken unit tests

[mp911de]

Because nested tests never ran, we didn't notice the following broken tests:

12:36:29  [ERROR]   LettuceConnectionUnitTests$BasicUnitTests.dbIndexShouldBeSetWhenObtainingConnection:147 » RedisSystem Unknown redis exception
12:36:29  [ERROR]   LettuceConnectionUnitTests$BasicUnitTests.getClientNameShouldSendRequestCorrectly:114 » RedisSystem Unknown redis exception
12:36:29  [ERROR]   LettuceConnectionUnitTests$BasicUnitTests.killClientShouldDelegateCallCorrectly:107 » RedisSystem Unknown redis exception
12:36:29  [ERROR]   LettuceConnectionUnitTests$BasicUnitTests.replicaOfNoOneShouldBeSentCorrectly:133 » RedisSystem Unknown redis exception
12:36:29  [ERROR]   LettuceConnectionUnitTests$BasicUnitTests.replicaOfShouldBeSentCorrectly:126 » RedisSystem Unknown redis exception
12:36:29  [ERROR]   LettuceConnectionUnitTests$BasicUnitTests.xClaimJustIdShouldAddJustIdFlagToArgs:213 » RedisSystem Unknown redis exception
12:36:29  [ERROR]   LettuceConnectionUnitTests$BasicUnitTests.xClaimShouldNotAddJustIdFlagToArgs:197 » RedisSystem Unknown redis exception
12:36:29  [ERROR]   LettuceConnectionUnitTests$BasicUnitTests.xaddShouldHonorMaxlen:183 » RedisSystem Unknown redis exception
12:36:29  [ERROR]   LettuceConnectionUnitTests$BasicUnitTests.xaddShouldHonorNoMkStream:246 » RedisSystem Unknown redis exception
12:36:29  [ERROR]   LettuceConnectionUnitTests$LettucePipelineConnectionUnitTests>LettuceConnectionUnitTests$BasicUnitTests.dbIndexShouldBeSetWhenObtainingConnection:147 » RedisSystem Unknown redis exception
12:36:29  [ERROR]   LettuceConnectionUnitTests$LettucePipelineConnectionUnitTests.shutdownWithNosaveOptionIsCalledCorrectly:278 » RedisSystem Unknown redis exception
12:36:29  [ERROR]   LettuceConnectionUnitTests$LettucePipelineConnectionUnitTests.shutdownWithNullOptionsIsCalledCorrectly:292 » RedisSystem Unknown redis exception
12:36:29  [ERROR]   LettuceConnectionUnitTests$LettucePipelineConnectionUnitTests.shutdownWithSaveOptionIsCalledCorrectly:271 » RedisSystem Unknown redis exception