Added software licensing documentation
Added software licensing feature doc
Added basic infrastructure
Added a first attempt of license parsing
Completed emulated feature license test
Added a partial certificate file management
Introduced double parsing of 'show license' and release license test
Added a test with certificate url
Improved test environment, added certificate copy to the device
Added TFTP support
Fixed problem of TFTP server needless restarts
Test code reworked
Fixed TFTP server bug for ATS device in emulated
Updated ssh server configuration command list
Reworked feature license test and added confirmation to license commands
Fixed parsing problem on spaced strings
Code reworked
Fixed real device tests
Feature license test suite extended
Added real release license key for tests