Cellular: added unit tests for new API functions (sim, power, base, device).

[jarvte]

Description

• updated missing new functions to unit tests stubs
• updated tests for better coverage
• fixed run_tests.sh to allow running tests from different folder names than mbed-os

No code changes, only unit tests.

@AriParkkila @AnttiKauppila please review.

Pull request type

[X] Fix
[ ] Refactor
[ ] New target
[ ] Feature
[ ] Breaking change

[0xc0170]

updated missing new functions to unit tests stubs
updated tests for better coverage
fixed run_tests.sh to allow running tests from different folder names than mbed-os

16 file changed, description provided but commit message is just about "update". Can you add more details there?

[0xc0170]

Add details to the commit msg about changes introduced.

[jarvte]

@0xc0170 updated commit msg and rebased as same modifications were in other PR's which just got merged so now 12 changed files. Also some changes are still similar with the pr #7286

[0xc0170]

/morph build

[mbed-ci]

Build : SUCCESS

Build number : 2446
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/7273/

Triggering tests

/morph test
/morph uvisor-test
/morph export-build
/morph mbed2-build

[mbed-ci]

Exporter Build : SUCCESS

Build number : 2077
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/7273/

[mbed-ci]

Test : SUCCESS

Build number : 2225
Test logs :http://mbed-os-logs.s3-website-us-west-1.amazonaws.com/?prefix=logs/7273/2225

[cmonr]

Hi @jarvte. We recently found an issue with the way Astyle in Travis CI was being setup such that it was always failing PRs. The PR will need to be rebased to get the fix which is now in master (#7338).

Once this PR is rebased, we'll prioritize getting it back into CI as soon as possible.

[cmonr]

Ooor not...

sigh

At least we can merge this in.