Resolve "Make interval, amount of keys to poll from qkd modules and max keys configurable"

Description

Related Issue

Motivation and Context

How Has This Been Tested?

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Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

Closes #31 (closed)

goKMS/config/config.go

@@ -34,12 +34,15 @@ type TLSConfig struct {
 }
 
 type QuantumModule struct {
-	QmType      string `yaml:"Type"`
-	Address     string `yaml:"Address"`
-	Hostname    string `yaml:"Hostname"`
-	LocalSAEID  string `yaml:"LocalSAEID"`
-	TargetSAEID string `yaml:"TargetSAEID"`
-	MasterMode  bool   `yaml:"MasterMode"`
+	QmType           string `yaml:"Type"`
+	Address          string `yaml:"Address"`
+	Hostname         string `yaml:"Hostname"`
+	LocalSAEID       string `yaml:"LocalSAEID"`
+	TargetSAEID      string `yaml:"TargetSAEID"`
+	MasterMode       bool   `yaml:"MasterMode"`
+	KeyFetchInterval int    `yaml:"KeyFetchInterval"`
+	KeyFetchAmount   int    `yaml:"KeyFetchAmount"`
+	MaxKeyFillLevel  int    `yaml:"MaxKeyFillLevel"`
 }
 
 type ETSI14Server struct {