Enable passing Atmos tests

Also clarify why we skip certain tests with SkipException.

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

@@ -65,4 +65,9 @@ public class AtmosContainerIntegrationLiveTest extends BaseContainerIntegrationT
    public void testDelimiterList() {
       throw new SkipException("Delimiter support is not yet implemented");
    }
+
+   @Override
+   public void testListContainerPrefix() throws InterruptedException {
+      throw new SkipException("Prefix support is not yet implemented");
+   }
 }

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

@@ -42,39 +42,8 @@ public class AtmosIntegrationLiveTest extends BaseBlobIntegrationTest {
    }
 
    @Override
-   @Test(enabled = false)
-   public void testGetIfMatch() {
-      // no etag support
-   }
-
-   @Override
-   @Test(enabled = false)
-   public void testGetIfModifiedSince() {
-      // not supported
-   }
-
-   @Override
-   @Test(enabled = false)
-   public void testGetIfNoneMatch() {
-      // no etag support
-   }
-
-   @Override
-   @Test(enabled = false)
-   public void testGetIfUnmodifiedSince() {
-      // not supported
-   }
-
-   @Override
-   @Test(enabled = false)
-   public void testGetRange() {
-      // TODO this should work
-   }
-
-   @Override
-   @Test(enabled = false)
    public void testGetTwoRanges() {
-      // not supported
+      throw new SkipException("Atmos MIME-encodes multiple ranges");
    }
 
    // not supported
@@ -122,16 +91,9 @@ public class AtmosIntegrationLiveTest extends BaseBlobIntegrationTest {
       throw new SkipException("Expiration not yet implemented");
    }
 
-   @Test(enabled = false)
-   // problem with the stub and md5, live is fine
+   @Override
    public void testMetadata() {
-      // TODO
-   }
-
-   @Test(enabled = false)
-   // problem with the stub and md5, live is fine
-   public void testPutObject() throws Exception {
-      // TODO
+      throw new SkipException("Atmos cannot overwrite blob when Content-MD5 is set");
    }
 
    @Override