L2SS-232: Add a Docker tag/push script for local images

Closes L2SS-232

See merge request !49

L2SS-225:  Fix rebuild_system_from_scratch.sh to also function on CentOS7

Closes L2SS-225

See merge request !41

L2SS-229 "Add gitpython and python-logstash-async to itango"

Closes L2SS-229

See merge request !46

L2SS-231: add a device with 20 attributes that generate random numnbers on read

Closes L2SS-231

See merge request !47

L2SS-192: Provide interface for raw header fields, add example packet (needs...

Closes L2SS-192

See merge request !45

L2SS-192: reserved_0 -> reserved to not be overly defensive. if there are multiple reserved fields in the future, we'll deal with that by then.

L2SS-228: Fix mount path for the host's tango repo dir to /opt/lofar2.0/tango/

Closes L2SS-228

See merge request !44

L2SS-170:  First stab at an LTS cold start script

See merge request !22

L2SS-192: Provide interface for raw header fields, add example packet (needs to be a better one, but this is all we have for now)

L2SS-192: Provide interface for raw header fields, add example packet (needs to be a better one, but this is all we have for now)

L2SS-227:  Make tangonet the default for Docker

Closes L2SS-227

See merge request !42

The reason is simple.  When I check for docker-compose, the
execution can fail.  Then I'll check for the built-in
docker compose.  If set -e is active the first failure will result
the script being aborted with no chance to check for the second
option.

Instead do it in the function itself in order to make it more
visible what is actually done.

The bash -e shebang does not work on CentOS 7.