[stable/zed] build: install python-3parclient in cinder image (#1930)

This is an automated cherry-pick of #1926
/assign okozachenko1203
diff --git a/images/cinder/Dockerfile b/images/cinder/Dockerfile
index 4866ec9..dbfb887 100644
--- a/images/cinder/Dockerfile
+++ b/images/cinder/Dockerfile
@@ -14,6 +14,7 @@
     --constraint /upper-constraints.txt \
         /src/cinder \
         purestorage \
+        python-3parclient \
         storpool \
         storpool.spopenstack
 EOF