Adding the api that returns all apps from the database to the client
to be used in the 21-k8s-app-upgrade script in order to correctly log
the current update/revert state of the apps.
Test Plan:
PASS: build-pkgs && build-image
PASS: Fresh install AIO-SX
PASS: Platform upgrade stx-10 to master
PASS: Platform rollback from master to stx-10
PASS: The api returns a list of apps loaded into the database as
expected.
Partial-bug: 2121827
Change-Id: I1e1d6e653e7bc0f0a529413b7c31996dff7d95ef
Signed-off-by: David Bastos <david.barbosabastos@windriver.com>