mediachanger/castorrmc/CMakeLists.txt
mediachanger/castorrmc/common/CMakeLists.txt
mediachanger/castorrmc/rmc/CMakeLists.txt

Please note that casting the result to void is not good enough for gcc >= 7

Added -Wno-narrowing -Wno-implicit-fallthrough compiler flags to protoc3 output files if using gcc version 7 or greater

We now assume that Finished() will always be called, so explicit timeout
handling in RequestProc is redundant.

In case of successful Request processing, the XRootD framework will call
Finished(cancel=false). In the case of a failure or timeout, the framework
will call Finished(cancel=true).

Fixed errors generated by Scheduler code passing getMessage() instead of getMessage().str() to ScopedParamContainer.add()

mediachanger code.

Example error:

/home/smurray/CTA/mediachanger/io.hpp:353:3: error: dynamic exception
specifications are deprecated in C++11 [-Werror=deprecated]
   throw(cta::exception::TimeOut, cta::exception::Exception);
   ^~~~~

This ensures the uniqueness of the agent name even if a process creates an agent several times in the same second.

Forwarding -b and -B options to `create_instance.sh` so that we can run the buildtree test directly like this:
```
./run_systemtest.sh  -n toto -s tests/archive_retrieve.sh -O -D -k -b /buildtree -B CTA-build
```
This will be very helpful to test buildtree in CI automatically.

They prevented propoer statistics update.

As systemd is mounting tmpfs in /tmp, I had to move the artifacts
repository to /opt/repo (which is anyway better).
Default entry point in the container is systemd and I added /etc/rc.local entry point for systemd containers.
Initially it is pulled from a shared mount on the kubelet running the
pod.
This commit is compatible with the standard way of running CI jobs,
following sytemd commits may break retrocompatibility.

This allowed the archive requeuest to be removed from ownership bulk.
Also adapted unit tests and related Mocks (mainly MockArchiveMount).
Removed unused functions from job level updating.