Updates to kube env interaction

 - local KUBECONFIG var detection
 - proper handling of env vars
 - fixes for KUBECONFIG loading when env file is given/not given
 - main IP extraction
 - wording fixes

 Related-PROD: PROD-35903

Change-Id: I68f1fd18a72a99502460d3b6158a43cd60d7cf1b
diff --git a/cfg_checker/modules/network/checker.py b/cfg_checker/modules/network/checker.py
index b65e14d..c2de426 100644
--- a/cfg_checker/modules/network/checker.py
+++ b/cfg_checker/modules/network/checker.py
@@ -75,7 +75,7 @@
         skip_list=None,
         skip_list_file=None
     ):
-        super(SaltNetworkChecker, self).__init__()
+        super(KubeNetworkChecker, self).__init__()
         self.mapper = KubeNetworkMapper(
             config,
             errors_class=self.errors,