Elimination of floor (_) labeled executables and relative command paths

Elimination of floor (_) labeled executables and relative command paths

[Issue#]       SSDWSSP-684
[Bug/Feature]  A security vulnerability to attacks fixed.
[Cause]        1) Using an floor labaled exec, a malicious process can pollute the floor labelled resources.
               2) If a relative path is used a different, malicious command might be executed (PATH change)
[Solution]     The floor labaled executables and relative command paths were eliminated.
[Verification] 1) Build, install and run tests.
               2) Verify that no executables from the package has the floor label.
               3) Verify that there are no relative command paths in scripts installed by the package.

Change-Id: Ic5b948d38406c47bc424077779303636bcdc8969