Ensure that letsencrypt cert is obtained for xmpp when not in onion only mode

src/freedombone-app-xmpp

@@ -809,11 +809,14 @@ function install_xmpp {
 
     update_prosody_modules
 
-    if [[ $ONION_ONLY == 'no' ]]; then
-        # obtain a cert for the default domain
-        if [[ "$(cert_exists ${DEFAULT_DOMAIN_NAME} pem)" == "0" ]]; then
-            echo $'Obtaining certificate for the main domain'
-            create_site_certificate ${DEFAULT_DOMAIN_NAME} 'yes'
+    # obtain a cert for the default domain
+    if [[ "$(cert_exists ${DEFAULT_DOMAIN_NAME} pem)" == "0" ]]; then
+        create_site_certificate ${DEFAULT_DOMAIN_NAME} 'yes'
+        if [[ $ONION_ONLY == 'no' ]]; then
+            if [[ "$(cert_exists ${DEFAULT_DOMAIN_NAME} pem)" == "0" ]]; then
+                echo $'LetsEncrypt cert could not be obtained for xmpp'
+                exit 72342
+            fi
         fi
     fi