* Fix iosxr netconf plugin response namespace
* iosxr netconf plugin removes namespace by default
for all the responses as parsing of xml is easier
without namepsace in iosxr module. However to validate
the response received from device against yang model requires
namespace to be present in resposne.
* Add a parameter in iosxr netconf plugin to control if namespace
should be removed from response or not.
* Fix CI issues
* Fix review comment
829fc0feda