tools: enforce linebreak after ternary operators

This is to be consistent with the other operators and helps
understanding the context when the code is grepped.

PR-URL: https://github.com/nodejs/node/pull/10213
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
Reviewed-By: Teddy Katz <teddy.katz@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

tools/eslint-rules/no-useless-regex-char-class-escape.js

@@ -108,9 +108,9 @@ module.exports = {
   },
 
   create(context) {
-    const overrideSet = new Set(context.options.length
-                                  ? context.options[0].override || []
-                                  : []);
+    const overrideSet = new Set(context.options.length ?
+                                context.options[0].override || [] :
+                                []);
 
     /**
      * Reports a node