ZDM Proxy Util v2.3.1

ZDM Util: upgrade Go version and some of its dependencies (#70)

ZDM Proxy Util v2.3.0

ZDM-207 Make ansible scripts and terraform working with both Ubuntu a…

ZDM Proxy Util v2.2.1

Fix rolling restart playbook (#55)

This PR fixes a recent regression that appears to have been caused by a
change in behaviour of the Ansible Docker module. This broke the
`rolling_restart_zdm_proxy.yml` playbook (all other playbooks were not
affected).

Changes in this PR are:
- The rolling restart operation is now done by running the `docker
restart` shell command, rather than using the Docker module.
- The Ansible Docker module version has been pinned to `2.7.0`, which is
the latest version available through `pip` and compatible with the
version of Ansible used by the automation.

No documentation changes are needed for this PR, as these are purely
internal fixes that do not change the user interaction.

ZDM Proxy Util v2.2.0

ZDM-494 Make it easier to encrypt sensitive variables and remove them…

ZDM Proxy Util v2.1.0

This PR contains the changes to expose the heartbeat-related configuration variables in the Ansible automation.

ZDM Proxy Util v2.0.3

Fix collect logs playbook and minor improvement to the monitoring pla…

ZDM Proxy Util v2.0.1

Remove deploy key (#21)

- Removed deploy key from repo
- Removed all references to it in scripts and Dockerfile
- Changed git clone command to use https instead of ssh key in container
initialisation script and legacy setup ansible control host script

ZDM Proxy Util v2.0.0

fix the deploy key (#19)