Update install-mysql.sh
Update install-mysql.sh

Stop rebuilding mysql every time.
RavenX8/osIROSE-new,dev-osrose/osIROSE-new,dev-osrose/osIROSE-new,dev-osrose/osIROSE-new,RavenX8/osIROSE-new,RavenX8/osIROSE-new