tapes

Add read-only tape flag support in the catalogue for the TAPE table.
Add RdbmsCatalogue::setTapeReadOnly method to modify this flag with
  "cta-admin tape ch" command.
Add RdbmsCatalogue::setTapeReadOnlyOnError to set this flag from taped.
Add support for rdonly flag listing for "cta-admin tape ls" and
  "cta-admin sq" command.

all containers.
Many failures were due to slow DNS name resolution by kube-dns.
To solve this I am now scanning all registered services in the namespace
and adding entries to /etc/hosts on all the `Running` containers in the
namespace. This solution is valid for both systemd and non-systemd
containers.

Added MEDIA_TYPE and VENDOR columns to TAPE table and upgraded xrootd-ssi-protobuf-interface to v0.29

Done

Now use -m for comments not -c.

Also fixes some typos.

If CI passes...

and generating all the required krb5 keytabs

adding all the missing bits to allow the simple systemtest to run on the client pod:
- add user `daemon` to sudoer in eos so that we can xrdfs prepare as a `powerusers` user
- add the `powerusers` group mount rule in cta
- add the missing bits in client_test.sh

to allow all users with ctausers as their primary group to mount tapes. the uid-gid mapping is performed by the mgm

2 tapeservers are now available: tpsrv01 and tpsrv02.
systest.sh only put tpsrv01 up and perform the basic test on 1 drive only.

Removed the "--encryptionkey" option from "cta tape add"

Now `run_systemtest.sh` can be used standalone, outside of CI environment.

Waiting for library configuration. If missing it leads to failed test: no drive tape or library available...