Move code to pkg

pkg/provider/kubernetes/k8s/namespace.go

@@ -0,0 +1,32 @@
+package k8s
+
+import (
+	"fmt"
+	"strings"
+)
+
+// Namespaces holds kubernetes namespaces.
+type Namespaces []string
+
+// Set adds strings elem into the the parser
+// it splits str on , and ;.
+func (ns *Namespaces) Set(str string) error {
+	fargs := func(c rune) bool {
+		return c == ',' || c == ';'
+	}
+	// get function
+	slice := strings.FieldsFunc(str, fargs)
+	*ns = append(*ns, slice...)
+	return nil
+}
+
+// Get []string.
+func (ns *Namespaces) Get() interface{} { return *ns }
+
+// String return slice in a string.
+func (ns *Namespaces) String() string { return fmt.Sprintf("%v", *ns) }
+
+// SetValue sets []string into the parser.
+func (ns *Namespaces) SetValue(val interface{}) {
+	*ns = val.(Namespaces)
+}