SBN app compatibility with cFS

[SweeWarman]

@CDKnightNASA Are there any test applications that I could run to verify SBN is working as expected with the latest updates to cFS? cFS nodes running SBN are no longer talking to each other after incorporating the newest changes to cFS and SBN. I keep getting the following warnings:

CFE_SB_42: Invalid Cmd, Unexpected Command Code 9
CFE_SB_42: Invalid Cmd, Unexpected Command Code 11

I am used to seeing "CPU1 connected" when two nodes start communicating with each other. That doesn't seem to happen any more.

[skliper]

SBN likely needs the MID updates for the app-to-app commands.

[CDKnightNASA]

Note that there is a test application "sbnhk" under the test folder.

I'll start looking into this issue today.

[CDKnightNASA]

ref nasa/cFE#523