Add validation scripts to travis

Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com>

.travis.yml

@@ -4,7 +4,17 @@ go:
     - 1.10.x
     - tip
 
+install:
+    - go get -t -v ./...
+    - go get -u github.com/vbatts/git-validation
+    - go get -u github.com/kunalkushwaha/ltag
+
+before_script:
+    - pushd ..; git clone https://github.com/containerd/project; popd
+
 script:
+    - DCO_VERBOSITY=-q ../project/script/validate/dco
+    - ../project/script/validate/fileheader ../project/
     - go test -race -coverprofile=coverage.txt -covermode=atomic
 
 after_success: