Replace pvar usage with print_var

pvar is an abbreviation for print_var.  For final code, print_var lends more
clarity.

Change-Id: Ibbb606ce10b2a1035eaf735c383758fb9a224149
Signed-off-by: Michael Walsh <micwalsh@us.ibm.com>
diff --git a/bin/validate_plug_ins.py b/bin/validate_plug_ins.py
index ba4cebb..809f17a 100755
--- a/bin/validate_plug_ins.py
+++ b/bin/validate_plug_ins.py
@@ -120,7 +120,7 @@
 
     plug_in_packages_list = return_plug_in_packages_list(plug_in_dir_paths,
                                                          mch_class)
-    qpvar(plug_in_packages_list)
+    qprint_var(plug_in_packages_list)
 
     # As stated in the help text, this program must print the full paths of
     # each selected plug in.