* Automatic package repository creation for debian and rpm repositories using deb-s3 and rpm-s3 tools
* Fixing paths in email for repositories
* Add manual verification step for maven staging repo
* Do not create release directory in /tmp, because we might loose it on VMs
* Removed unused download-s3 script
* Add signage check for RPM
* Removed download-s3.py/upload-s3.py, as they are unused
Closes#13209
The script now allows to run all required steps at once and alternatively
prints out manual instructions to run the steps individually. It also has
flags and options to run debug builds from a local checkout.