Update the Common Data function handler in the CDH example

[mablem8]

The Python TX example sends two Common Data commands.

• The first command includes bytes in ascending order and expects a Common Ack reply from the CDH example.
• The second command includes bytes in mixed order and expects a Common Nack reply from the CDH example.

Update the CDH example to support the expected replies.

• Common Data handler implementation
• External definition in TAB implementation
• Use in TAB implementation

[ChadTaylor17]

I made the changes here: 1ad701d505b0ea4a42fa95477dd199d197648da0 I also tested these changes and was able to get a COMMON_ACK and COMMON_NACK:

[mablem8]

Nice catch, I've tested the fix and confirmed it works. Closing this issue, but the pull request should be back into the sprint-1 branch and not the master branch.