Update rule to avoid false license detection

Reference: #2900
Reported-by: @lalitbittu11
Signed-off-by: Philippe Ombredanne <[email protected]>

Author: pombredanne

src/licensedcode/data/rules/bsd-new_and_google-patent-license-webm_5.RULE

@@ -1,4 +1,4 @@
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
+ *  tree. An {{additional intellectual property rights grant}} can be found
  *  in the file PATENTS.

src/licensedcode/data/rules/bsd-new_and_google-patent-license-webm_5.yml

@@ -1,6 +1,6 @@
 license_expression: bsd-new AND google-patent-license-webm
 is_license_notice: yes
-minimum_coverage: 50
+minimum_coverage: 70
 referenced_filenames:
     - LICENSE
     - PATENTS

tests/licensedcode/data/datadriven/lic4/oauth2.go

@@ -0,0 +1,20 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package oauth2 provides support for making
+// OAuth2 authorized and authenticated HTTP requests.
+// It can additionally grant authorization with Bearer JWT.
+package oauth2 // import "golang.org/x/oauth2"
+
+import (
+	"bytes"
+	"errors"
+	"net/http"
+	"net/url"
+	"strings"
+	"sync"
+
+	"golang.org/x/net/context"
+	"golang.org/x/oauth2/internal"
+)

tests/licensedcode/data/datadriven/lic4/oauth2.go.yml

@@ -0,0 +1,2 @@
+license_expressions:
+  - bsd-new