add scheduler

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

pkg/config/config.go

@@ -22,9 +22,10 @@ type Service struct {
 }
 
 type Check struct {
-	Name    string         `json:"name,omitempty" yaml:"name,omitempty"`
-	Data    string         `json:"data,omitempty" yaml:"data,omitempty"`
-	Timeout mtime.Duration `json:"timeout,omitempty" yaml:"timeout,omitempty"`
+	Name     string         `json:"name,omitempty" yaml:"name,omitempty"`
+	Data     string         `json:"data,omitempty" yaml:"data,omitempty"`
+	Timeout  mtime.Duration `json:"timeout,omitempty" yaml:"timeout,omitempty"`
+	Interval mtime.Duration `json:"interval,omitempty" yaml:"interval,omitempty"`
 }
 
 func (cfg *Config) Parse(r io.Reader) error {