[DLAB-4126] Upgrade deployment (PKI & Ansible scripts) (#27)

* [DLAB-4126] Upgrade deployment (PKI & Ansible scripts)

- Upgrade functions.sh: 
Addition of genericity on the functions allowing to handle a vault file
- Add ERASE as input parameters on PKI's scripts in order to preverse existing items when we execute scripts (add module, clients ...)
- Upgrade generate_stores.sh in order to populate dynamically the linked vault file
- Upgrade packaging in order to add the archive of deployment
- Upgrade scripts according to the PKI in order to clean/fix deployment for keystores/trustores and linked configuration

* [DLAB-4126] Update PKI according to the previous updates

* [DEVOPS] Add README and update cleanup method for certificates

* [DLAB-4126]  Taking into account feedback on PR

Co-authored-by: Mathieu Leguay <mathieu.leguay@teamdlab.com>