Added state file location defintion to the CA configuration. Added more certificate properties to certificate database.

examples/ca_config.hcl

@@ -1,13 +1,14 @@
 ca "example_ca" {
-  name = "Example CA"
-  country = "PL"
+  name         = "Example CA"
+  country      = "PL"
   organization = "ACME Corp"
-  serial_type = "random"
-  key_size = 4096
-  validity = "10y"
+  serial_type  = "random"
+  key_size     = 4096
+  validity     = "10y"
 
   paths {
     certificates = "certs"
     private_keys = "private"
+    state_file   = "ca_state.json"
   }
 }