TlsChannel fix: Handle zeroing in the BufferHolder

As we use a PowerOfTwoBufferPool the buffer can be greater
than maxTlsPacketSize.

JAVA-3588

Author: rozza

driver-core/src/main/com/mongodb/internal/connection/tlschannel/impl/BufferHolder.java

@@ -129,9 +129,7 @@ private void resizeImpl(int newCapacity) {
    * <p>Typically used for security reasons, with buffers that contains now-unused plaintext.
    */
   public void zeroRemaining() {
-    ((Buffer) buffer).mark();
-    buffer.put(zeros, 0, buffer.remaining());
-    ((Buffer) buffer).reset();
+    zero(buffer.position());
   }
 
   /**
@@ -140,9 +138,20 @@ public void zeroRemaining() {
    * <p>Typically used for security reasons, with buffers that contains now-unused plaintext.
    */
   public void zero() {
+    zero(0);
+  }
+
+  private void zero(final int position) {
     ((Buffer) buffer).mark();
-    ((Buffer) buffer).position(0);
-    buffer.put(zeros, 0, buffer.remaining());
+    ((Buffer) buffer).position(position);
+    int size = buffer.remaining();
+    int length = Math.min(size, zeros.length);
+    int offset = 0;
+    while (length > 0) {
+      buffer.put(zeros, 0, length);
+      offset = offset + length;
+      length = Math.min(size - offset, zeros.length);
+    }
     ((Buffer) buffer).reset();
   }