* Add clientHost to the cta::common::dataStructures::SecurityIdentity struct, defining the machine the cta command was submitted from
* cta::comon::dataStructures::SecurityIdentity::host now represents the frontend machine the commands were executed on, and is set by the server

update cta-release package to use the new public repo

Fix error handling code of XrdCtaStream so it doesn't lead to a segmentation fault up the call chain

Merge branch 'master' of https://gitlab.cern.ch/cta/CTA into 501-cta-taped-should-set-the-state-to-down-when-machine-rebooting

Merge branch 'master' of ssh://gitlab.cern.ch:7999/cta/CTA into 988-instrument-backpressure-for-retrieve-in-dr-ls

Merge branch 'master' of ssh://gitlab.cern.ch:7999/cta/CTA into 976-move-storage-of-persistent-drive-states-to-the-db