Add missing peer dependency on glob

Author: Dave Bartolomeo

tools/build-tasks/package.json

@@ -23,6 +23,7 @@
     "ansi-colors": "^4.0.1",
     "child-process-promise": "^2.2.1",
     "fs-extra": "^8.1.0",
+    "glob": "^7.1.4",
     "glob-promise": "^3.4.0",
     "gulp": "^4.0.2",
     "gulp-sourcemaps": "^2.6.5",