Support Linting YAML as part of Travis CI build (#554)

* add yamllint command to travis CI

installs and runs a linter across the YAML in the
project to ensure consistency in the written YAML.

this uses yamllint and the default yamllint config with
"truthy" and "line-length" disabled.

* run dos2unix on CRLF files

* YAMLLINT: remove trailing spaces

* YAMLLint: add YAML document start

* YAMLLint: too many spaces around bracket

* YAMLLint: fix indentation

* YAMLLint: remove duplicate key

* YAMLLint: newline at end of file

* YAMLLint: Too few spaces after comma

* YAMLLint: too many spaces after colon

.goreleaser.yml

@@ -1,3 +1,4 @@
+---
 env:
   - GO111MODULE=on
   - KUBEBENCH_CFG=/etc/kube-bench/cfg

.travis.yml

@@ -10,10 +10,12 @@ notifications:
 before_install:
   - sudo apt-get -qq update
   - sudo apt-get install -y rpm
+  - pip install --user yamllint==1.18.0
   - gem install --no-ri --no-rdoc fpm
   - go get -t -v ./...
 
 script:
+  - yamllint -c ./.yamllint.yaml .
   - GO111MODULE=on go test ./...
   - IMAGE_NAME=kube-bench make build-docker
   - docker run -v `pwd`:/host kube-bench install

.yamllint.yaml

@@ -0,0 +1,6 @@
+---
+extends: default
+
+rules:
+  line-length: disable
+  truthy: disable

cfg/rh-0.7/master.yaml

@@ -774,7 +774,6 @@ groups:
                 op: has
                 value: "/etc/origin/master/ca-bundle.crt"
               set: true
-      test_items:
             - flag: "masterCA"
               compare:
                 op: has

hack/debug.yaml

@@ -1,3 +1,4 @@
+---
 # use this pod with: kubectl run ubuntu -it --pid=host  -- /bin/bash
 # this allows you to debug what is running on the host.
 apiVersion: v1

hack/kind.yaml

@@ -1,3 +1,4 @@
+---
 apiVersion: batch/v1
 kind: Job
 metadata:

integration/testdata/add-tls-kind-k8s114.yaml

@@ -1,3 +1,4 @@
+---
 apiVersion: kind.sigs.k8s.io/v1alpha3
 kind: Cluster
 networking:
@@ -16,4 +17,3 @@ nodes:
   # the control plane node config
   - role: control-plane
     image: "kindest/node:v1.14.6"
-  

job-eks.yaml

@@ -1,3 +1,4 @@
+---
 apiVersion: batch/v1
 kind: Job
 metadata:
@@ -29,4 +30,3 @@ spec:
         - name: etc-kubernetes
           hostPath:
             path: "/etc/kubernetes"
-

job-iks.yaml

@@ -1,3 +1,4 @@
+---
 apiVersion: batch/v1
 kind: Job
 metadata:

job-master.yaml

@@ -1,3 +1,4 @@
+---
 apiVersion: batch/v1
 kind: Job
 metadata:

job-node.yaml

@@ -1,3 +1,4 @@
+---
 apiVersion: batch/v1
 kind: Job
 metadata:

job.yaml

@@ -1,3 +1,4 @@
+---
 apiVersion: batch/v1
 kind: Job
 metadata: