Fix all the broken unit tests

[joeljfischer]

Related Issues:

• Some Enum values are defined in the spec, but are not implemented in the library #61 - Commented out tests
• Some getters do not return nil when they have not been set #75 - Example: SDLAddCommandSpec - [Getter/Setter Tests / Should return nil if not set]
• PerformAudioPassThru builder does not set the correlationID #79 - SDLRPCRequestFactorySpec - [BuildPerformAudioPassThru Tests / Should build correctly] - PR Fixes SDLProtocolMessageAssember completionHandler being called twice #138
• buildPutFile crashes on valid input #80 - SDLRPCRequestFactorySpec - Crash - PR Fix attempting to copy an SDLEnum #133
• The "values" list in SDLRPCMessageType is not initialized correctly #82 - SDLRPCMessageTypeSpec - All failures - PR Correctly initialize [SDLRPCMessageType values] #141
• The getter for hmiLevel in SDLOnLockScreenStatus doesn't work #83 - SDLOnLockScreenStatusSpec - [Getter/Setter Tests / Should set and get correctly] - PR Fix SDLOnLockScreenStatus hmiLevel checking wrong class type #135
• SDLV1/V2ProtocolHeader objects are not properly converted to byte data #84 - SDLV1ProtocolHeaderSpec - [Data Tests / Should convert to byte data correctly] - PR Fix SDLProtocolHeader ternary order of operations #134
• EndSession messages are not constructed correctly in SDLProtocol #90 - SDLProtocolSpec - [SendEndSession Tests / During V1 Session / Should send the correct data] - PR Fix [SDLProtocol sendEndSession] setting frame data to StartSession #136
• Completion handlers are always called with "not completed" message in SDLProtocolMessageAssembler #92 - SDLProtcolAssemblerSpec - Lines 86-93 - PR Fixes SDLProtocolMessageAssember completionHandler being called twice #138
• The FunctionID for OnSyncPData should be 98305 #95 - SDLFunctionIDSpec - [GetFunctionName Tests / Should return the correct function name]
• SDLV1/V2ProtocolHeader copy does not copy bytesInPayload variable #132 - SDLV1ProtocolHeaderSpec - [Copy Tests / Should copy correctly] - PR Fix SDLV1/V2ProtocolHeader not copying bytesInPayload #137
• Document SDLPrioritizedObjectCollection priority lower is 'higher' #143 - SDLPrioritizedObjectCollectionSpec - [a prioritized object collection / should retrieve higher priority objects first]