ci: fix integration test CLOUD_INIT_LOCAL_LOG_PATH. drop hashFiles (#6804)

hashFiles OOMs github actions while attempting to md5sum large sets
files under cloudinit_logs. Use `if-no-files-found: ignore` in
upload-artifact to avoid errors in absence of cloudinit_logs due to
unexpected errors which prevent writing integration test logs.

Author: blackboxsw

.github/workflows/24-pr-integration.yml

@@ -67,11 +67,12 @@ jobs:
           echo "[lxd]" > /home/$USER/.config/pycloudlib.toml
       - name: Run integration Tests
         run: |
-          CLOUD_INIT_CLOUD_INIT_SOURCE="$(ls ${{ runner.temp }}/cloud-init-base*.deb)" CLOUD_INIT_OS_IMAGE=${{ env.RELEASE }} LOCAL_LOG_PATH=./cloudinit_logs tox -e integration-tests-ci -- --color=yes tests/integration_tests/
+          CLOUD_INIT_CLOUD_INIT_SOURCE="$(ls ${{ runner.temp }}/cloud-init-base*.deb)" CLOUD_INIT_OS_IMAGE=${{ env.RELEASE }} CLOUD_INIT_LOCAL_LOG_PATH=./cloudinit_logs tox -e integration-tests-ci -- --color=yes tests/integration_tests/
       - name: Upload cloudinit logs on failure
-        if: failure() && hashFiles('./cloudinit_logs/**') != ''
+        if: failure()
         uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f  # v6.0.0
         with:
           name: 'cloudinit-logs'
           path: './cloudinit_logs'
           retention-days: 3
+          if-no-files-found: ignore