Add tests to preference server
Add tests to preference server

Signed-off-by: Guy Perron <3ff9a12c785b6fd8ef2750b373a5904fb00da350@ericsson.com>

lmcgupe/theia,lmcgupe/theia,hexa00/theia,epatpol/theia-1,hexa00/theia,epatpol/theia-1,epatpol/theia-1