Fix print_var calls: new fmt, indent, etc.

Changed print_var calls to correctly use new arguments:
 - fmt
 - indent
 - col1_width

Change-Id: If80088d5b69865074fd510421b918da7fd8e874e
Signed-off-by: Michael Walsh <micwalsh@us.ibm.com>
diff --git a/lib/gen_robot_plug_in.py b/lib/gen_robot_plug_in.py
index 31236c4..1088cb5 100755
--- a/lib/gen_robot_plug_in.py
+++ b/lib/gen_robot_plug_in.py
@@ -212,12 +212,11 @@
     failed_plug_in_name = properties.get('failed_plug_in_name', '')
 
     if proc_plug_pkg_rc != 0:
-        hex = 1
         if quiet:
             os.system("cat " + temp_file_path + " >&2")
         if grep_rc != 0:
-            gp.print_varx("grep_rc", grep_rc, hex)
-        gp.print_varx("proc_plug_pkg_rc", proc_plug_pkg_rc, hex)
+            gp.print_var(grep_rc, gp.hexa())
+        gp.print_var(proc_plug_pkg_rc, gp.hexa())
         gp.print_timen("Re-cap of plug-in failures:")
         gc.cmd_fnc_u("egrep -A 1 '^failed_plug_in_name:[ ]+' "
                      + temp_properties_file_path + " | egrep -v '^\\--'",