Bind operation prefix to correct namespace
During NetconfUtil.writeNormalizedNode() we failed
to set a prefix for the netconf operation leading to a warning.
Make sure we set the correct NamespaceContext and fallback
to setPrefix() in case the underlying DOM writer does not
support setNamespaceContext().
JIRA: NETCONF-603
Change-Id: Icff5e045c4e901bb53990177d448a1ea43952c62
Signed-off-by: Robert Varga <robert.varga@pantheon.tech>
Signed-off-by: Tomas Cere <tomas.cere@pantheon.tech>
(cherry picked from commit
197acb99bed8c585e26091eafb761481533718a0)