caddy-frontend: Pass correct openssl path to cacuase macro

software/caddy-frontend/buildout.hash.cfg

@@ -22,7 +22,7 @@ md5sum = c801b7f9f11f0965677c22e6bbe9281b
 
 [template-apache-frontend]
 filename = instance-apache-frontend.cfg.in
-md5sum = 2903758a104186b7dae9573c3470be78
+md5sum = 119cfa0cdf9aa10a1832eeaac374dcea
 
 [template-caddy-replicate]
 filename = instance-apache-replicate.cfg.in
@@ -118,4 +118,4 @@ md5sum = 38792c2dceae38ab411592ec36fff6a8
 
 [template-kedifa]
 filename = instance-kedifa.cfg.in
-md5sum = ab192ebb668872971075d0072f9aa1c9
+md5sum = 40b91b4b4a57654f3662d928c4f90282

software/caddy-frontend/instance-apache-frontend.cfg.in

@@ -190,7 +190,7 @@ stop-on-error = True
      crl_path='${kedifa-login-config:crl}',
      key_path='${kedifa-login-csr:key}',
      template_csr='${kedifa-login-csr:template-csr}',
-     openssl=parameter_dict['openssl'] ~ '/bin/openssl',
+     openssl=parameter_dict['openssl'],
 )}}
 
 [dynamic-custom-personal-template-slave-list]

software/caddy-frontend/instance-kedifa.cfg.in

@@ -103,7 +103,7 @@ stop-on-error = True
      key_path='${kedifa-csr:key}',
      on_renew='${kedifa-reloader:wrapper-path}',
      template_csr='${kedifa-csr:template-csr}',
-     openssl=parameter_dict['openssl'] ~ '/bin/openssl',
+     openssl=parameter_dict['openssl'],
 )}}
 
 [store-csr_id]