Merge ~hloeung/ntp-charm:master into ntp-charm:master

[Haw Loeung]

Fixed path to libraries

[🤖 Canonical IS Merge Bot (canonical-is-mergebot)]

This merge proposal is being monitored by mergebot. Change the status to Approved to merge.

[🤖 Canonical IS Merge Bot (canonical-is-mergebot)]

Change successfully merged at revision e2b0153add2c36a812cede2c851ced180286077f

diff --git a/unit_tests/test_action_diagnostics.py b/unit_tests/test_action_diagnostics.py
index 5e62d04..86b3d17 100644
--- a/unit_tests/test_action_diagnostics.py
+++ b/unit_tests/test_action_diagnostics.py
@@ -10,6 +10,7 @@ import sys
 # The templating engine isn't required for these tests.
 sys.modules['jinja2'] = mock.MagicMock()
 
+sys.path.append('actions')
 import diagnostics      # NOQA: E402
 
 
diff --git a/unit_tests/test_ntp_scoring.py b/unit_tests/test_ntp_scoring.py
index 901f50a..dd704d3 100644
--- a/unit_tests/test_ntp_scoring.py
+++ b/unit_tests/test_ntp_scoring.py
@@ -2,8 +2,10 @@
 
 from random import shuffle
 from unittest.mock import Mock, patch
+import sys
 import unittest
 
+sys.path.append('lib')
 import ntp_scoring
 
 
diff --git a/unit_tests/test_ntp_source_score.py b/unit_tests/test_ntp_source_score.py
index 378faa0..9804955 100644
--- a/unit_tests/test_ntp_source_score.py
+++ b/unit_tests/test_ntp_source_score.py
@@ -2,8 +2,10 @@
 
 from unittest.mock import patch
 import math
+import sys
 import unittest
 
+sys.path.append('lib')
 from ntp_source_score import (
     get_delay_score,
     get_source_delays,