correct path

tasks/certificate.yml

@@ -20,7 +20,7 @@
 - name: self sign certificate
   command: openssl ca -selfsign -batch -notext
     -config cnf/ca.cnf
-    -in cnf/ca.csr.pem
+    -in csr/ca.csr.pem
     -out certs/ca.cert.pem
     {{ certificate_authority_private_key_password is defined | ternary('-passin env:PRIVATE_KEY_PASSWORD','') }}
   args: