Update os-brick library to 2.10.4

The previous version contained a regression that affected operation
when running under Python 2.7 while using the Dell EMC VxFlex OS
(ScaleIO) storage backend.

Change-Id: Ib2ae9b847b2966d84e33f530e5fd2b46fc755a27

lower-constraints.txt

@@ -65,7 +65,7 @@ networkx==1.11
 oauth2client==1.5.0
 openstackdocstheme==1.20.0
 os-api-ref==1.4.0
-os-brick==2.10.3
+os-brick==2.10.4
 os-client-config==1.29.0
 os-win==3.0.0
 oslo.cache==1.29.0

releasenotes/notes/ossn-0086-followup-e1a5e1c98aa3aa9b.yaml

@@ -0,0 +1,16 @@
+---
+upgrade:
+  - |
+    This release updates the os-brick library used by Cinder to version
+    2.10.4 to correct a problem with the fix for `Bug #1823200
+    <https://bugs.launchpad.net/cinder/+bug/1823200>`_ in the previous
+    os-brick release.
+
+    See the `os-brick 2.10.4 release notes
+    <https://docs.openstack.org/releasenotes/os-brick/train.html#relnotes-2-10-4-stable-train>`_
+    for more information.
+fixes:
+  - |
+    `Bug #1875959 <https://bugs.launchpad.net/cinder/+bug/1875959>`_:
+    Fixed issue where NetApp ONTAP NFS driver would fail to flexclone
+    a Glance image.

requirements.txt

@@ -58,7 +58,7 @@ suds-jurko>=0.6 # LGPLv3+
 WebOb>=1.7.1 # MIT
 oslo.i18n>=3.15.3 # Apache-2.0
 oslo.vmware>=2.17.0 # Apache-2.0
-os-brick>=2.10.3 # Apache-2.0
+os-brick>=2.10.4 # Apache-2.0
 os-win>=3.0.0 # Apache-2.0
 tooz>=1.58.0 # Apache-2.0
 google-api-python-client>=1.4.2 # Apache-2.0