discovery server entry in configuration needs security settings

[huebl]

The discovery server entry is currently configured as follows:

  <DiscoveryServer>
      <DiscoveryUrl>opc.tcp://localhost:4840</DiscoveryUrl>
      <RegisterInterval>40000</RegisterInterval>
  </DiscoveryServer>

As currently in the endpoint configuration, security settings have to be includes.

Example:

	  <SecuritySetting>
	    <SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#None</SecurityPolicyUri>
	    <MessageSecurityMode>None</MessageSecurityMode>
	  </SecuritySetting>
	  <SecuritySetting>
	    <SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#Basic128Rsa15</SecurityPolicyUri>
	    <MessageSecurityMode>SignAndEncrypt</MessageSecurityMode>
	  </SecuritySetting>
	  <SecuritySetting>
	    <SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#Basic256</SecurityPolicyUri>
	    <MessageSecurityMode>SignAndEncrypt</MessageSecurityMode>
	  </SecuritySetting>
	  <SecuritySetting>
	    <SecurityPolicyUri>http://opcfoundation.org/UA/SecurityPolicy#Basic256Sha256</SecurityPolicyUri>
	    <MessageSecurityMode>SignAndEncrypt</MessageSecurityMode>
	  </SecuritySetting>