Archive results under plan-specific directory

Archive results under plan-specific directory

 - store the results of the execution under plan-specific folder
   under archives instead of directly under it to support multiple
   plan executions in one run
 - trivial output changes to CCSDK healthcheck to trigger it to
   verify this change
 - note that this verification shall not pass until
   https://gerrit.onap.org/r/c/ci-management/+/115175 is merged!

Issue-ID: INT-1786
Signed-off-by: Lasse Kaihlavirta <l.kaihlavirt@partner.samsung.com>
Change-Id: I7fbdd38312bcc13409065957fdb1b01712ac8abc