Sanity checks for 0.7.0

1. Please, get the tarball and check it, run tests.
   1. tarball: https://gitlab.isc.org/isc-projects/stork/-/jobs/876122/artifacts/browse
2. Start demo locally (rake docker_up) and follow the steps from https://gitlab.isc.org/isc-projects/stork/-/wikis/Demo
3. Install server and agent localy e.g. in VMs from binary packages:
   1. debs: https://gitlab.isc.org/isc-projects/stork/-/jobs/876123/artifacts/browse
   2. rpms: https://gitlab.isc.org/isc-projects/stork/-/jobs/876124/artifacts/browse