If mdns answer hasn't been received within timeout, Value error would be raised, but the mdns-server-thread would still run, blocking CI jobs. Fixed by moving the raise statement within try-finally block
* Original commit: espressif/esp-idf@3758177bf8
Test services may cause confussion (and did cause some GitHub/forum issues). This update runs test services only when example executed in ci. Also host name is a simple config entry if executed outside of ci.
* Original commit: espressif/esp-idf@74cc7a065f
