ci: improve license check

.github/workflows/licensecheck.yml

@@ -103,9 +103,13 @@ jobs:
  echo "MAVEN_OPTS: $MAVEN_OPTS"
 
  if [[ ${ACT:-} == "true" ]]; then # when running locally using nektos/act
-  maven_args="-Djgit.dirtyWorkingTree=warning"
+ maven_args="-Djgit.dirtyWorkingTree=warning"
  else
- maven_args="--no-transfer-progress"
+ maven_args="--no-transfer-progress"
+ fi
+
+ if [[ -n $DASH_IPLAB_TOKEN ]]; then
+ dash_iplab_token_arg="-Ddash.iplab.token=$DASH_IPLAB_TOKEN"
  fi
 
  # "excludeArtifactIds" parameter is to prevent builds from failing with:
@@ -115,7 +119,7 @@ jobs:
  # This content is either not correctly mapped by the system, or requires review.
  # Error: Dependency license check failed. Some dependencies need to be vetted. 
 
- mvn \
+ (set -x; mvn \
  --errors \
  --update-snapshots \
  --batch-mode \
@@ -125,12 +129,12 @@ jobs:
  org.eclipse.dash:license-tool-plugin:license-check \
  -Dtycho.target.eager=true \
  -Ddash.projectId=technology.lsp4e \
- -Ddash.iplab.token="$DASH_IPLAB_TOKEN" \
+ ${dash_iplab_token_arg:-} \
  -Ddash.fail=true \
  -Ddash.summary=DEPENDENCIES \
  -DexcludeArtifactIds=\
  org.eclipse.rcp_root,\
- org.eclipse.ui.tests.harness
+ org.eclipse.ui.tests.harness)
 
 
  - name: Dash Summary