JCLOUDS-598: Populate additional MD5 field

Follow-on to a6337fdcc4.

apis/atmos/src/main/java/org/jclouds/atmos/functions/ParseObjectFromHeadersAndHttpContent.java

@@ -70,6 +70,7 @@ public class ParseObjectFromHeadersAndHttpContent implements Function<HttpRespon
       object.getAllHeaders().putAll(from.getHeaders());
       object.setPayload(from.getPayload());
       object.getContentMetadata().setContentLength(attemptToParseSizeAndRangeFromHeaders(from));
+      object.getContentMetadata().setContentMD5(object.getSystemMetadata().getContentMD5());
       return object;
    }
 

apis/atmos/src/test/java/org/jclouds/atmos/blobstore/integration/AtmosIntegrationLiveTest.java

@@ -91,11 +91,6 @@ public class AtmosIntegrationLiveTest extends BaseBlobIntegrationTest {
       throw new SkipException("Expiration not yet implemented");
    }
 
-   @Override
-   public void testMetadata() {
-      throw new SkipException("Atmos cannot overwrite blob when Content-MD5 is set");
-   }
-
    @Override
    public void testMultipartUploadNoPartsAbort() throws Exception {
       throw new SkipException("Atmos does not support multipart uploads");