refactor(lint): Don't allow console.log

Enable tslint check for `console.log` as a follow-up to
https://github.com/angular/angular/issues/13018

modules/e2e_util/e2e_util.ts

@@ -59,7 +59,7 @@ export function verifyNoBrowserErrors() {
   browser.manage().logs().get('browser').then(function(browserLog: any) {
     const filteredLog = browserLog.filter(function(logEntry: any) {
       if (logEntry.level.value >= webdriver.logging.Level.INFO.value) {
-        console.log('>> ' + logEntry.message);
+        console.error('>> ' + logEntry.message);
       }
       return logEntry.level.value > webdriver.logging.Level.WARNING.value;
     });