Fix conflicting IDs for octavia certs

Change-Id: I7c33c821234ef81096fe1b23b30441fa0e3daf3d
Related-PROD: PROD-24162
diff --git a/salt/minion/cert/octavia/amphora_client.yml b/salt/minion/cert/octavia/amphora_client.yml
index fd8f465..5a0309f 100644
--- a/salt/minion/cert/octavia/amphora_client.yml
+++ b/salt/minion/cert/octavia/amphora_client.yml
@@ -5,7 +5,7 @@
     minion:
       cert:
         octavia_amp_client:
-          ca_file: ${octavia:manager:certificates:ca_certificate}
+          ca_file: ${octavia:manager:haproxy_amphora:server_ca}
           ca_key_file: ${octavia:manager:certificates:ca_private_key}
           key_file: ${octavia:manager:haproxy_amphora:client_cert_key}
           cert_file: ${octavia:manager:haproxy_amphora:client_cert}