gtest_db_core: add Quota tests

- migrate MojDbQuota to gtest to get more tracability

Open-webOS-DCO-1.0-Signed-off-by: Nikolay Orliuk <norluk@luxoft.com>
Change-Id: I7e6d52c1de4297014fd6f746e93c285be3eeb10d
Reviewed-on: https://g2g.palm.com/2648
Reviewed-by: Build Verification
Reviewed-by: Nikolay Orliuk <norluk@luxoft.com>
Tested-by: Nikolay Orliuk <norluk@luxoft.com>
Reviewed-by: Roger Stringer <roger.stringer@lge.com>
gtest_db_core: add Search tests

- migrate MojDbSearch to gtest to get more tracability

Open-webOS-DCO-1.0-Signed-off-by: Nikolay Orliuk <norluk@luxoft.com>

Change-Id: I1df5b47d525da494031493d96426432dfb29ede7
Reviewed-on: https://g2g.palm.com/2649
Reviewed-by: Build Verification
Reviewed-by: Nikolay Orliuk <norluk@luxoft.com>
Tested-by: Nikolay Orliuk <norluk@luxoft.com>
Reviewed-by: Roger Stringer <roger.stringer@lge.com>
gtest_db_core: add TextCollator tests

- migrate MojDbTextCollator to gtest to get more tracability

Open-webOS-DCO-1.0-Signed-off-by: Nikolay Orliuk <norluk@luxoft.com>

Change-Id: I34edf77554450578ec0e4b1026ee1696282904cd
Reviewed-on: https://g2g.palm.com/2650
Reviewed-by: Build Verification
Reviewed-by: Nikolay Orliuk <norluk@luxoft.com>
Tested-by: Nikolay Orliuk <norluk@luxoft.com>
Reviewed-by: Roger Stringer <roger.stringer@lge.com>