r/minio: Do not mount storage volume with :Z

The `:Z` flag tells the container runtime to run `chcon` recursively on
the specified path, in order to ensure that the files are accessible
inside the container.  For a very large volume like the MinIO storage
directory, this can take an extremely long time.  It's really only
necessary on the first startup anyway, because the context won't change
after that.  To avoid spending a bunch of time, we can set the context
correctly when we create the directory, and then not worry about it
after that.

roles/minio/tasks/deploy.yml

@@ -34,6 +34,7 @@
     group: minio
     mode: u=rwx,go=
     state: directory
+    setype: container_file_t
   tags:
   - datadir
 

roles/minio/templates/minio.container.j2

@@ -10,7 +10,7 @@ Exec=server {% if minio_address|d %}--address {{ minio_address }} {% endif %}/da
 User=224
 Group=224
 EnvironmentFile=/etc/sysconfig/minio
-Volume={{ minio_storage_path }}:/data:rw,Z
+Volume={{ minio_storage_path }}:/data:rw
 Volume=/etc/minio/certs:/certs:ro,z
 Network=host
 NoNewPrivileges=yes