Clean up libprivilege-control test cases

Clean up libprivilege-control test cases

[Issue#] N/A
[Bug/Feature] N/A
[Cause] All test cases were in one file of 4200 lines.
[Solution] Divided test cases by functionalities tested :
normaln, nosmack, incorrect parameters, stress tests. Put them
in different source files, removed unused includes and macros,
created commons containing macros/functions used by different tests.
Created RUNNER GROUP for every funcionality.
[Verification] Build. Run libprivilege-control-test --output=text
--runignored - all tests should pass except for 4 ignores.

Change-Id: Iaf905e0cdcda043974958d294cc85e60e8d40752