This change adds "platform_managed_app: yes" to the application
metadata, indicating it should be managed by the application
framework.
Test Plan:
PASS: build-pkgs and build-image
PASS: upload and apply application
PASS: check auto update to next version
PASS: remove and delete application
Partial-bug: 2120187
Change-Id: I5478fe2d4df2ed4d6e266db3113a099ef87db0ff
Signed-off-by: Eduardo dos Santos França <Eduardo.dosSantosFranca@windriver.com>