exclude new tools vendor dir from validate

We have no control over the code in the vendored files.

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

test/tools/vendor/github.com/hashicorp/go-version/.travis.yml

@@ -1,6 +1,6 @@
-language: go 
+language: go
 
-go: 
+go:
   - 1.2
   - 1.3
   - 1.4
@@ -8,6 +8,6 @@ go:
   - "1.10"
   - 1.11
   - 1.12
-  
+
 script:
-  - go test 
+  - go test

test/tools/vendor/github.com/hashicorp/go-version/LICENSE

@@ -351,4 +351,3 @@ Exhibit B - “Incompatible With Secondary Licenses” Notice
       This Source Code Form is “Incompatible
       With Secondary Licenses”, as defined by
       the Mozilla Public License, v. 2.0.
-