mw-install-sqlite-2 macro using the shell script

To get rid of inlined shell inside jobs, I have migrated
mw-install-sqlite macro content to a slave script mw-install-sqlite.sh.
The new macro mw-install-sqlite-2 calls it and will let us smoothly
handle the migration.

Change-Id: I2b29f0f78313585f1602b9b13199fa2217667cab