[Imprv] Flow Network Security Multi-Tier support in Security Policy definition

[atlasblue]

When I try to protect Multi-Tier application (Web, APP, TIER) with Flow Network Security we can't define different AppTier in ntnx_security_rules only one AppTier category is supported.

Already tested and worked in V3 API

name: create app security rule
ntnx_security_rules:
name: MyAPP
app_rule:
target_group:
categories:
apptype: TEST
apptier: WEB, APP, DB <-- HERE WE NEED TO ADD DIFFERENT APPTIER