fix(hoststack): distinguish two tcp tag types

Previous change did not consider TCP_PPS and TCP_CPS robot tags
are used by two different suite types (hoststack or ASTF).
This fixes the unintended impact on hoststack.

+ Add HOSTSTACK tag to VSAP suites.
 - They could also get VSAP tag, but not needed for this Change.

Fixes: 1daa6fdc0bae284dee1b61f34534e59b60b7526a

Change-Id: Ic583b5ae336c9b74794706fefc232f221a243c87
Signed-off-by: Vratko Polak <vrpolak@cisco.com>