[nasa/nos3#176] Basic unit tests

[jlucas9]

Added ability to run unit tests in the sample app. Requires the following pull requests to be completed first:

• [nasa/nos3#176] Unit Tests nasa-itc/sample#14
• [nasa/nos3#176] Unit Tests nasa-itc/hwlib#8
• [nasa/nos3#176] Unit Tests nasa-itc/osal#4
• [nasa/nos3#176] Unit Tests nasa-itc/DS#2
• [nasa/nos3#176] Unit Tests nasa-itc/SC#2

[jlucas9]

To test this I did the following:

cd ~/Downloads
git clone https://github.com/nasa/nos3.git
cd nos3
git checkout nos3#176-unit-tests
git submodule update --init --recursive
make real-clean
make prep
make debug
make clean config build-test test-fsw

Confirmed tests passed manually at the end. Unfortunately, some tests may fail depending on the resources in your environment.

[Isgaroth-the-Green]

When I ran with a NOS3 virtual machine, things appear to all work; it has errors and failed tests when running on just a regular machine, though.

[jlucas9]

When I ran with a NOS3 virtual machine, things appear to all work; it has errors and failed tests when running on just a regular machine, though.

Was able to replicate. Simply running make test-fsw again has it passing which is fun. Thinking we approve this for new and create a new issue to resolve this.

[zlynch2]

When running 1 test fails out of 150. Seems to mostly work, I may be missing something small. Also I re-ran twice with make test-fsw and go the same result

[dccutrig]

My comment is similar. First time two tests failed, reran and one test failed.

[Donnie-Ice]

All tests passed for me