FIXES:
- ICE support now conditionally enabled only for FQDN/internet calling
- LAN-only setups (Quick Local Setup) no longer have ICE enabled
- pjsip.conf endpoints: ice_support only added when DOMAIN_NAME is set
- rtp.conf: icesupport only enabled when DOMAIN_NAME is configured
SCENARIOS SUPPORTED:
1. LAN only (Quick Local) - NO ICE, NO STUN, NO TURN ✓
2. FQDN with VPN - ICE enabled (DOMAIN_NAME set) ✓
3. FQDN without VPN, with COTURN - ICE + TURN ✓
4. FQDN without VPN, without COTURN - ICE (optional STUN) ✓
This ensures proper protocol configuration for all installation modes.
