Host group feature broken for current master

[KerstinKeller]

Problem Description

It seems that we have broken the host_group feature for SHM communication on current master, by not considering it in ApplySubscription functions.

ecal/ecal/core/src/readwrite/shm/ecal_writer_shm.cpp

Line 89 in 9278997

if (host_name_ != m_attributes.host_name) return;

However, the current approach / configuration does not scale 100%.
Instead host_group / domain should be an option of SHM transport layer options for each publisher / subscriber.
And possibly every transport layer could gain those domains.

How did you get eCAL?

Custom Build / Built from source

Environment

Current master build.

eCAL System Information

No response