bundler: Handle deprecated license metadata

Adds support for archaic forms of the license metadata in
package.json where the license field is an object rather than a
string.

Also removes the need to post-process the 'null' entries.

Resolves: rhbz#1920206

Signed-off-by: Stephen Gallagher <sgallagh@redhat.com>

nodejs-packaging-bundler

@@ -60,9 +60,9 @@ else
 	mv node_modules/ node_modules_prod
 fi
 echo "LICENSES IN BUNDLE:"
-find . -name "package.json" -exec jq .license {} \; >> ${TMP_DIR}/${PACKAGE_SAFE}-${VERSION}-bundled-licenses.txt
+find . -name "package.json" -exec jq '.license | strings' {} \; >> ${TMP_DIR}/${PACKAGE_SAFE}-${VERSION}-bundled-licenses.txt
+find . -name "package.json" -exec jq '.license | objects | .type' {} \; >> ${TMP_DIR}/${PACKAGE_SAFE}-${VERSION}-bundled-licenses.txt 2>/dev/null
 find . -name "package.json" -exec jq '.licenses[] .type' {} \; >> ${TMP_DIR}/${PACKAGE_SAFE}-${VERSION}-bundled-licenses.txt 2>/dev/null
-sed -i "/^null$/d" ${TMP_DIR}/${PACKAGE_SAFE}-${VERSION}-bundled-licenses.txt
 sort -u -o ${TMP_DIR}/${PACKAGE_SAFE}-${VERSION}-bundled-licenses.txt ${TMP_DIR}/${PACKAGE_SAFE}-${VERSION}-bundled-licenses.txt
 echo " Downloading dev dependencies"
 npm install --no-optional --only=dev