admin/pki: use symlink instead of DB to associate certificate to team

libfic/db.go

@@ -91,9 +91,7 @@ CREATE TABLE IF NOT EXISTS certificates(
   id_cert BIGINT UNSIGNED NOT NULL PRIMARY KEY AUTO_INCREMENT,
   creation TIMESTAMP NOT NULL,
   password VARCHAR(255) NOT NULL,
-  id_team INTEGER NULL,
-  revoked TIMESTAMP NULL,
-  FOREIGN KEY(id_team) REFERENCES teams(id_team)
+  revoked TIMESTAMP NULL
 ) DEFAULT CHARACTER SET = utf8 COLLATE = utf8_bin;
 `); err != nil {
 		return err