Move SpamTest to leveldb test suite

:Release Notes:
Rename SpamTest to LeveldbNoSpace test
Move it to leveldb test suite

:Detailed Notes:

:Testing Performed:
Compiled and tested localy.

:QA Notes:

:Issues Addressed:
[BHV-1214] SpamTest - fix mount rule

Open-webOS-DCO-1.0-Signed-off-by: Maksym Sditanov <maxim.sditanov@lge.com>

Change-Id: I13356957ba306568db7b83cb7d824ca549106196
Reviewed-on: https://g2g.palm.com/4802
Reviewed-by: DCO Verification
Reviewed-by: Maksym Sditanov <maxim.sditanov@lge.com>
Tested-by: Maksym Sditanov <maxim.sditanov@lge.com>