Updates CTA Frontend config so only the SSI plugin is loaded.

Use in the EOS workflow/bash scripts is deprecated. However it's useful
to keep the script around for now to test the SSI workflows without needing
to invoke EOS.

Default now set to 10s. Note that XRD_TIMEOUTRESOLUTION must be set
<= 10s, otherwise timeout defaults to 15s.

Reduced to the minium the number of database connections used by createSameSchemaInTwoSeparateInMemoryDatabases

Now the submodule does not provide a CMakeLists.txt file, this is now
provided by the main project (eos_cta/CMakeLists.txt)

from tapeserver/daemon to common directory

Added a second XrdSecDEBUG=1 to the workflow action of event sys.workflow.closew.default within the eoscta pod

Added XrdSecDEBUG=1 to the workflow action of event sys.workflow.closew.default within the eoscta pod

Moves check for validity of resource.client from generic to specific instantiation of
Service::Prepare