feat: add vault server profile

- add vault module to puppetfile
- define class to manage the install and config of vault
- manage the datavol and raft storage
- manage the unzip and other compression tools
- define custom unseal script and service
- add documentation on initial setup of vault

site/profiles/templates/vault/vault-unseal.service.erb

@@ -0,0 +1,14 @@
+[Unit]
+Description=Unseal Vault Service
+After=vault.service network.target
+Requires=vault.service
+PartOf=vault.service
+
+[Service]
+Type=oneshot
+ExecStart=/usr/local/bin/vault-unseal.sh
+RemainAfterExit=yes
+User=root
+
+[Install]
+WantedBy=multi-user.target