fix(encryption): respect user bson options when using autoEncryption

Fixes NODE-2278

Author: daprahamian

lib/core/wireprotocol/command.js

@@ -162,7 +162,7 @@ function _cryptCommand(server, ns, cmd, options, callback) {
       return;
     }
 
-    autoEncrypter.decrypt(response.result, (err, decrypted) => {
+    autoEncrypter.decrypt(response.result, options, (err, decrypted) => {
       if (err) {
         callback(err, null);
         return;
@@ -179,7 +179,7 @@ function _cryptCommand(server, ns, cmd, options, callback) {
     return;
   }
 
-  autoEncrypter.encrypt(ns, cmd, (err, encrypted) => {
+  autoEncrypter.encrypt(ns, cmd, options, (err, encrypted) => {
     if (err) {
       callback(err, null);
       return;