WISE_1570 greentea tests

[mirelachirica]

Description

Fixing greentea tests to work with WISE_1570 modem:
https://jira.arm.com/browse/IOTCELL-1142

Pull request type

[ x] Fix
[ ] Refactor
[ ] Target update
[ ] Functionality change
[ ] Breaking change

[0xc0170]

Changes looks fine to me.

Fixes looks straightforward but at least one there required implementation change (file features/cellular/framework/AT/AT_CellularNetwork.cpp) and does not contain any information how is it fixing it - I would say it should "how it is fixed" at least one sentence there in the commit message

[AnttiKauppila]

LGTM

[AnttiKauppila]

@mirelachirica Please update the commit message as Nir suggested

[mirelachirica]

I made a separate commit and also limited the original change to LTE mode only, because only in that mode the last active context shouldnt be deactivated.

[0xc0170]

/morph build

[mbed-ci]

Build : SUCCESS

Build number : 2864
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/7840/

Triggering tests

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

[0xc0170]

/morph mbed2-build

[mbed-ci]

Exporter Build : FAILURE

Build number : 2494
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/7840/

[mbed-ci]

Test : SUCCESS

Build number : 2629
Test logs :http://mbed-os-logs.s3-website-us-west-1.amazonaws.com/?prefix=logs/7840/2629

[cmonr]

/morph export-build

[mbed-ci]

Exporter Build : SUCCESS

Build number : 2506
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/7840/

[adbridge]

Based on top of changes added for 5.10 only and already present in 5.10