util: Fix tracevol to use --config for oc only

tracevol.py uses --config instead of --kubeconfig when invoked with
-c kubectl and -k <some_path> at the same time.

Signed-off-by: Santiago Sanchez Paz <sanchezpaz@gmail.com>

troubleshooting/tools/tracevol.py

@@ -502,9 +502,10 @@ def get_pv_data(arg, pvname):
     pvdata = {}
     cmd = [arg.command]
     if arg.kubeconfig != "":
-        cmd += ["--config", arg.kubeconfig]
-    else:
-        cmd += ["--kubeconfig", arg.kubeconfig]
+        if arg.command == "oc":
+            cmd += ["--config", arg.kubeconfig]
+        else:
+            cmd += ["--kubeconfig", arg.kubeconfig]
 
     cmd += ['get', 'pv', pvname, '-o', 'json']
     out = subprocess.Popen(cmd, stdout=subprocess.PIPE,