integration_tests: include timestamp in log output

[OddBloke]

Proposed Commit Message

integration_tests: include timestamp in log output

Test Steps

Before:

INFO     integration_testing:clouds.py:73 Detected image: image_id=focal os=ubuntu release=focal

After:

2020-12-09 22:26:03 INFO      integration_testing:clouds.py:73 Detected image: image_id=focal os=ubuntu release=focal

Checklist:

• My code follows the process laid out in the documentation
• I have updated or added any unit tests accordingly
• I have updated or added any documentation accordingly