Feat cronjob (#23)

Make possible to declare cronTabs inside docker-compose file.

⇒ Also, add multiple compose file injection with `-c` arguments 

⇒ Also, fixes “ignore depends on” for same pod 

⇒ Also fixes
 
* fix [Be able to specify compose.yml files and its override #21](https://github.com/metal3d/katenary/issues/21)
* fix [Be able to ignore ports to expose in a katenary.io/ports list #16](https://github.com/metal3d/katenary/issues/16)

And more fixes… (later, we will use branches in a better way, that was a hard, long fix process)

helm/roleBinding.go

@@ -0,0 +1,44 @@
+package helm
+
+type RoleRef struct {
+	Kind     string `yaml:"kind"`
+	Name     string `yaml:"name"`
+	APIGroup string `yaml:"apiGroup"`
+}
+
+type Subject struct {
+	Kind      string `yaml:"kind"`
+	Name      string `yaml:"name"`
+	Namespace string `yaml:"namespace"`
+}
+
+type RoleBinding struct {
+	*K8sBase `yaml:",inline"`
+	RoleRef  RoleRef   `yaml:"roleRef,omitempty"`
+	Subjects []Subject `yaml:"subjects,omitempty"`
+}
+
+func NewRoleBinding(name string, user *ServiceAccount, role *Role) *RoleBinding {
+	rb := &RoleBinding{
+		K8sBase: NewBase(),
+	}
+
+	rb.K8sBase.Kind = "RoleBinding"
+	rb.K8sBase.Metadata.Name = ReleaseNameTpl + "-" + name + "-cron-allow"
+	rb.K8sBase.ApiVersion = "rbac.authorization.k8s.io/v1"
+	rb.K8sBase.Metadata.Labels[K+"/component"] = name
+
+	rb.RoleRef.Kind = "Role"
+	rb.RoleRef.Name = role.Metadata.Name
+	rb.RoleRef.APIGroup = "rbac.authorization.k8s.io"
+
+	rb.Subjects = []Subject{
+		{
+			Kind:      "ServiceAccount",
+			Name:      user.Metadata.Name,
+			Namespace: "{{ .Release.Namespace }}",
+		},
+	}
+
+	return rb
+}