luna-sysservice: Add missing dependency on libxml2 and sqlite3

:Release Notes:
Missing dependency was found when running per-component builds [ES-118]

:Detailed Notes:
do_configure fails without it:
| -- checking for module 'libxml-2.0'
| --   package 'libxml-2.0' not found
| CMake Error at FindPkgConfig.cmake:266 (message):
|   A required package was not found

| -- checking for module 'sqlite3'
| --   package 'sqlite3' not found
| CMake Error at FindPkgConfig.cmake:266 (message):
|   A required package was not found

:Testing Performed:
Builds ok after building libxml2 and sqlite3

:QA Notes:
No change in image

:Issues Addressed:
[GF-8457] luna-sysservice is missing libxml2 and sqlite3 dependency

Open-webOS-DCO-1.0-Signed-off-by: Martin Jansa <martin.jansa@lge.com>
Change-Id: I314fc66242344289147739aaad115260f595f182
Reviewed-on: https://g2g.palm.com/2795
Reviewed-by: Martin Jansa <Martin.Jansa@lge.com>
Tested-by: Martin Jansa <Martin.Jansa@lge.com>
Reviewed-by: Build Verification
Reviewed-by: Susan Montooth <susan.montooth@lge.com>