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/role.go

@@ -0,0 +1,38 @@
+package helm
+
+type Rule struct {
+	ApiGroup  []string `yaml:"apiGroups,omitempty"`
+	Resources []string `yaml:"resources,omitempty"`
+	Verbs     []string `yaml:"verbs,omitempty"`
+}
+
+type Role struct {
+	*K8sBase `yaml:",inline"`
+	Rules    []Rule `yaml:"rules,omitempty"`
+}
+
+func NewCronRole(name string) *Role {
+	role := &Role{
+		K8sBase: NewBase(),
+	}
+
+	role.K8sBase.Metadata.Name = ReleaseNameTpl + "-" + name + "-cron-executor"
+	role.K8sBase.Kind = "Role"
+	role.K8sBase.ApiVersion = "rbac.authorization.k8s.io/v1"
+	role.K8sBase.Metadata.Labels[K+"/component"] = name
+
+	role.Rules = []Rule{
+		{
+			ApiGroup:  []string{""},
+			Resources: []string{"pods", "pods/log"},
+			Verbs:     []string{"get", "list", "watch", "create", "update", "patch", "delete"},
+		},
+		{
+			ApiGroup:  []string{""},
+			Resources: []string{"pods/exec"},
+			Verbs:     []string{"create"},
+		},
+	}
+
+	return role
+}