update permissions and unit tests

unit tests actually required us to register both files so it worked as expected

Author: duncanista

python/src/otel/otel_sdk/otel-handler

@@ -176,6 +176,11 @@ def setUpClass(cls):
             'export LAMBDA_LAYER_PKGS_DIR="/opt/python"',
             f'export LAMBDA_LAYER_PKGS_DIR="{TOX_PYTHON_DIRECTORY}"',
         )
+        replace_in_file(
+            os.path.join(INIT_OTEL_SCRIPTS_DIR, "otel-instrument"),
+            'export LAMBDA_LAYER_PKGS_DIR="/opt/python"',
+            f'export LAMBDA_LAYER_PKGS_DIR="{TOX_PYTHON_DIRECTORY}"',
+        )
 
     def setUp(self):
         super().setUp()
@@ -203,6 +208,11 @@ def tearDownClass(cls):
             f'export LAMBDA_LAYER_PKGS_DIR="{TOX_PYTHON_DIRECTORY}"',
             'export LAMBDA_LAYER_PKGS_DIR="/opt/python"',
         )
+        replace_in_file(
+            os.path.join(INIT_OTEL_SCRIPTS_DIR, "otel-instrument"),
+            f'export LAMBDA_LAYER_PKGS_DIR="{TOX_PYTHON_DIRECTORY}"',
+            'export LAMBDA_LAYER_PKGS_DIR="/opt/python"',
+        )
 
     def test_active_tracing(self):
         test_env_patch = mock.patch.dict(