build: Enable MULTIPLE_OWNER by default

build: Enable MULTIPLE_OWNER by default

Bug: https://jira.iotivity.org/browse/IOT-2241
Change-Id: Id2e1bd03d887076204117c6f7ab60e435804d886
Signed-off-by: Philippe Coval <philippe.coval@osg.samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/20699
Tested-by: jenkins-iotivity <jenkins@iotivity.org>
Reviewed-by: Habib Virji <habib.virji@samsung.com>
(cherry picked from commit 16e1df43f7f04a5c0950397f2282defb1bdb0c13)
Reviewed-on: https://gerrit.iotivity.org/gerrit/20821
Reviewed-by: Alex Kelley <alexke@microsoft.com>
Reviewed-by: Kevin Kane <kkane@microsoft.com>