Correct paths in test.sh.

Change-Id: I94fda27e4401a71242ec202dcd50591d0e4ddbb4
Signed-off-by: Pawel Cieslak <pawel.cieslak@intel.com>

Author: Pawel-Cieslak

scripts/tests/copyright/test.sh

@@ -11,16 +11,18 @@
 # diff output is printed
 #
 
+script_directory=$(dirname "$0")
+
 python_interpreter="python3"
 
 if [[ "$OSTYPE" == "msys" ]]; then
     python_interpreter="python"
 fi
 
-$python_interpreter ../../lint/set_copyright.py in/*
+$python_interpreter "${script_directory}/../../lint/set_copyright.py" "${script_directory}"/in/*
 
-for i in in/*
+for i in "${script_directory}"/in/*
 do
     fn=$(basename $i)
-    diff -du in/$fn out/$fn
+    diff -du "${script_directory}/in/${fn}" "${script_directory}/out/${fn}"
 done