Currently both v1 and v2 of PTP notification APIs have no check for
existing subscription when responding to a new request, then creating a
duplicated one. The (undesirable) side effect of that is the multiple
notification messages for the same application.
Test Plan:
PASS: Submitting consecutive POST requests to APIs v1 & v2.
PASS: For v2, issued consecutive POST requests using '.' and the actual
nodename.
Closes-Bug: #1996233
Signed-off-by: Douglas Henrique Koerich <douglashenrique.koerich@windriver.com>
Change-Id: Ia15476411ba493b2c1168757c4b01d1a7f168b38
e8b4375bb6