Tools, Resources: Convert to a set during win2unix

[theotherjimmy]

Description

The exporters were failing as some things would end up as a list after
win2unix. Resolves #7954

Pull request type

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

[bridadan]

One line change 🎉 Looks good

[NirSonnenschein]

/morph build

[mbed-ci]

Build : SUCCESS

Build number : 3321
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/8248/

Triggering tests

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

[mbed-ci]

Exporter Build : FAILURE

Build number : 2956
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/8248/

[cmonr]

All licensing tokens for the specified feature are already in use. Status code 0xc8001006. [LicenseCheck:2.15.2.J2938, RMS:8.5.1.2009, Feature:ARM.EW.COMPILER, Version:1.10]

booo

/morph export-build

[mbed-ci]

Exporter Build : SUCCESS

Build number : 2957
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/8248/

[mbed-ci]

Test : SUCCESS

Build number : 3132
Test logs :http://mbed-os-logs.s3-website-us-west-1.amazonaws.com/?prefix=logs/8248/3132