Make netconf_get python3 compat (#57578)

This uses to_text to ensure tostring() from lxml is decoded properly.

Depends-On: https://github.com/ansible/ansible/pull/57638
Signed-off-by: Paul Belanger <pabelanger@redhat.com>
(cherry picked from commit f709d2e2bb)

changelogs/fragments/netconf-python3-ab45f4c5bf155b6b.yaml

@@ -0,0 +1,2 @@
+bugfixes:
+  - netconf - Make netconf_get python3 compatible.

lib/ansible/modules/network/netconf/netconf_get.py

@@ -159,6 +159,7 @@ except ImportError:
 from ansible.module_utils.basic import AnsibleModule
 from ansible.module_utils.network.netconf.netconf import get_capabilities, locked_config, get_config, get
 from ansible.module_utils.network.common.netconf import remove_namespaces
+from ansible.module_utils._text import to_text
 
 try:
     import jxmlease
@@ -235,7 +236,7 @@ def main():
     else:
         response = get(module, filter_spec, execute_lock)
 
-    xml_resp = tostring(response)
+    xml_resp = to_text(tostring(response))
     output = None
 
     if display == 'xml':
@@ -246,7 +247,7 @@ def main():
         except Exception:
             raise ValueError(xml_resp)
     elif display == 'pretty':
-        output = tostring(response, pretty_print=True)
+        output = to_text(tostring(response, pretty_print=True))
 
     result = {
         'stdout': xml_resp,