Checking certificates for onion only versions

src/freedombone-utils-web

     if [ "$2" ]; then
         USE_LETSENCRYPT="$2"
     fi
-    if [[ $USE_LETSENCRYPT == 'no' ]]; then
+    if [[ $USE_LETSENCRYPT == 'no' || "$ONION_ONLY" != 'no' ]]; then
         if [ ! -f "/etc/ssl/private/${1}.key" ]; then
             echo $"Private certificate for ${CHECK_HOSTNAME} was not created"
             exit 63959
 }
 
 function create_self_signed_cert {
+    if [ ! "${SITE_DOMAIN_NAME}" ]; then
+        echo $'No site domain specified for self signed cert'
+        exit 4638565385
+    fi
     "${PROJECT_NAME}-addcert" -h "${SITE_DOMAIN_NAME}" --dhkey "${DH_KEYLENGTH}"
     function_check check_certificates
     check_certificates "${SITE_DOMAIN_NAME}"
 }
 
 function create_letsencrypt_cert {
+    if [ ! "${SITE_DOMAIN_NAME}" ]; then
+        echo $'No site domain specified for letsencrypt cert'
+        exit 246824624
+    fi
+
     if ! "${PROJECT_NAME}-addcert" -e "${SITE_DOMAIN_NAME}" -s "${LETSENCRYPT_SERVER}" --dhkey "${DH_KEYLENGTH}" --email "${MY_EMAIL_ADDRESS}"; then
         if [[ ${NO_SELF_SIGNED} == 'no' ]]; then
             echo $"Lets Encrypt failed for ${SITE_DOMAIN_NAME}, so try making a self-signed cert"