[CP #1780 > support/v5.13] service client connection state handling

[eclipse-ecal-bot]

Cherry-pick failed

Cherry-picked PR #1780 to branch support/v5.13.
The cherry-pick has failed.

The following files have caused conflicts:

ecal/core/src/service/ecal_clientgate.cpp
ecal/core/src/service/ecal_clientgate.h
ecal/core/src/service/ecal_service_client_impl.cpp
ecal/core/src/service/ecal_service_client_impl.h

Resolving

Please resolve conflicts manually. You can use this PR and branch to your convenience.

git fetch origin
git checkout -b local/cherry-pick/fe2a857/support/v5.13 origin/support/v5.13
git branch -u origin/cherry-pick/fe2a857/support/v5.13
git cherry-pick f0d4fa94525785419b2a5cff9ff34531bf5b5c7c..fe2a8574af2657613e57067a1cf19c869f387967

# Resolve conflicts and use
#     git cherry-pick --continue
# until all conflicts are resolved.

git push -f origin HEAD:cherry-pick/fe2a857/support/v5.13

After resolving all conflicts, rebase-merge this PR.

[FlorianReimold]

The merge conflicts are huge, just look at the scrollbars. Do we need this in 5.13?

[rex-schilasky]

We do not need to merge this.