Update eslint related packages (#48513)

* Update eslint related packages

* add errorMessage to no-restricted-paths validation

* add license to eslintrc file

* ignore broken plugin fixture

* upgrade tangled peer deps

* give name to unnamed func to avoid typescript-eslint/typescript-eslint#1078

* migrate away from removed prefer-interface

* migrate away from removed no-angle-bracket-type-assertions rule

* migrate away from removed no-triple-slash-reference rule

* old config was invalid and made this rule a noop

* fix array-type rule config

* fix readonly paramProperties that weren't being checked

* fix propType ordering

* remove references to non-existent rules

* remove unnecessary disable that is improperly formatted

* fix comment-related spacing

* fix typo/invalid namespace overrides

* rename fn to avoid hook-alike behavior

* remove reference to old removed rule

* use caret version for prettier

* reference babel-eslint with absolute path

packages/kbn-eslint-plugin-eslint/package.json

@@ -4,7 +4,7 @@
   "private": true,
   "license": "Apache-2.0",
   "peerDependencies": {
-    "eslint": "5.16.0",
+    "eslint": "6.5.1",
     "babel-eslint": "^10.0.3"
   },
   "dependencies": {

packages/kbn-eslint-plugin-eslint/rules/__tests__/disallow_license_headers.js

@@ -22,7 +22,7 @@ const rule = require('../disallow_license_headers');
 const dedent = require('dedent');
 
 const ruleTester = new RuleTester({
-  parser: 'babel-eslint',
+  parser: require.resolve('babel-eslint'),
   parserOptions: {
     ecmaVersion: 2018,
   },

packages/kbn-eslint-plugin-eslint/rules/__tests__/no_restricted_paths.js

@@ -32,7 +32,7 @@ const { RuleTester } = require('eslint');
 const rule = require('../no_restricted_paths');
 
 const ruleTester = new RuleTester({
-  parser: 'babel-eslint',
+  parser: require.resolve('babel-eslint'),
   parserOptions: {
     sourceType: 'module',
     ecmaVersion: 2018,

packages/kbn-eslint-plugin-eslint/rules/__tests__/require_license_header.js

@@ -22,7 +22,7 @@ const rule = require('../require_license_header');
 const dedent = require('dedent');
 
 const ruleTester = new RuleTester({
-  parser: 'babel-eslint',
+  parser: require.resolve('babel-eslint'),
   parserOptions: {
     ecmaVersion: 2018,
   },

packages/kbn-eslint-plugin-eslint/rules/no_restricted_paths.js

@@ -77,6 +77,7 @@ module.exports = {
                   anyOf: [{ type: 'string' }, { type: 'array', items: { type: 'string' } }],
                 },
                 allowSameFolder: { type: 'boolean' },
+                errorMessage: { type: 'string' },
               },
               additionalProperties: false,
             },