[IOT-1436] fix scons build issue related sqlite3 with unsecured mode

[IOT-1436] fix scons build issue related sqlite3 with unsecured mode

sqlite3 is triggering to download by default.
it causes a storage memory waste in user side.
scons build script should check any option for download that lib

Change-Id: I701752bb450dc79d3604304fc7130375586e5356
Signed-off-by: jihwan.seo <jihwan.seo@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/13071
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Ashok Babu Channa <ashok.channa@samsung.com>
(cherry picked from commit 651887dd94864cf0f8eda52f5a8d7ec93dc27d0e)
Reviewed-on: https://gerrit.iotivity.org/gerrit/13381