Adding test frameworks and test sources

[bridadan]

This commit adds the following test frameworks:

• greentea-client (https://github.com/ARMmbed/greentea-client)
  • This framework provides a key-value api for communicating with the
    greentea test tool (https://github.com/ARMmbed/greentea)
• unity (https://github.com/ARMmbed/unity)
  • This framework provides test assert macros that can be used when
    writing test cases
• utest (https://github.com/ARMmbed/utest)
  • This framework allows you to execute a series of test cases with
    reporting that works with the greentea test tool
    (https://github.com/ARMmbed/greentea)

The following changes were made when brining these frameworks into the
tree:

• References to mbed_drivers/mbed.h within utest's tests were migrated
  to mbed.h
• The yotta file module.json was removed from greentea-client and
  unity
  • coverage.json was also removed from greentea-client
• Apache 2.0 license files were removed from greentea-client

This also bringings in a number of tests that have been newly written or ported from various sources:

• TESTS/integration - Very basic tests, used to check if testing frameworks are working correctly
• TESTS/mbed_drivers (Thanks @PrzemekWirkus!) - TESTS ported from mbed OS 3.0 (https://github.com/ARMmbed/mbed-drivers)
• TESTS/mbedmicro-mbed (Thanks @PrzemekWirkus!) - Tests that weren't covered by TESTS/mbed_drivers that currently live in libraries/tests/mbed
• TESTS/mbedmicro-rtos-mbed (Thanks @PrzemekWirkus!) - Ported tests that currently live in libraries/tests/rtos/mbed
• TESTS/storage_abstraction (Thanks @rgrover!) - Tests for the storage_abstraction hal

Please review @adbridge
FYI @sg- @0xc0170

[adbridge]

@bridadan wrt

The following changes were made when brining these frameworks into the
tree:

    References to mbed_drivers/mbed.h within utest's tests were migrated to mbed.h
    The yotta file module.json was removed from greentea-client and unity
        coverage.json was also removed from greentea-client

This will remove Yotta support for building Morpheus, has this decision been made ? I believe there are still some groups using Yotta...

[bridadan]

@adbridge This behavior was never supported in this full tree though right? Only in the module repositories. So if updates need to land here, those files can be removed in the PR.

[sg-]

LGTM 👍 Can we get some more CI running on this :)

[bridadan]

I landed the frameworks in mbed/features/frameworks. Is that the right place @sg- @adbridge ?

[bridadan]

@mbed-bot: TEST

HOST_OSES=windows
BUILD_TOOLCHAINS=GCC_ARM,ARM,IAR
TARGETS=K64F,LPC1768,NUCLEO_F411RE

[adbridge]

Ran a merge tool on the frameworks directory to compare against a current checkout of mbed-os/frameworks. Changes shown match @bridadan comments .
So LGTM 👍

[adbridge]

@bridadan mbed/features/frameworks seems reasonable to me .

[mbed-bot]

[Build 655]
SUCCESS: Building succeeded and tests were run! Be sure to check the test results

[bridadan]

Ah need to remove a few .gitignore and .gitattributes files, one sec!

[sg-]

mbed/features/frameworks is a great place! Lets make sure to land the updates to static initialization or create an issue to track that if not already fixed.

[bridadan]

I have removed the .gitignore and .gitattributes from greentea-client.

@sg- Ready from my side!