feat: add garage roles and servers

roles/garage/templates/garage.service.j2

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+[Unit]
+Description=Garage Data Store
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Environment='RUST_LOG=garage=info' 'RUST_BACKTRACE=1'
+ExecStart=/usr/local/bin/garage server
+StateDirectory=garage
+DynamicUser=true
+ProtectHome=true
+NoNewPrivileges=true
+
+[Install]
+WantedBy=multi-user.target

roles/garage/templates/garage.toml.j2

@@ -0,0 +1,15 @@
+metadata_dir = "/var/lib/garage/meta"
+data_dir = "/var/lib/garage/data"
+db_engine = "lmdb"
+
+replication_mode = "{{ garage_replication_mode }}"
+
+compression_level = 2
+
+rpc_bind_addr = "[::]:3901"
+rpc_public_addr = "{{ ansible_facts['fqdn'] }}:3901"
+rpc_secret = "{{ garage_rpc_secret }}"
+
+[s3_api]
+s3_region = "garage"
+api_bind_addr = "[::1]:3900"