Fix: Improve logging (coscine/issues#2568)

src/GraphDeployer/nlog.config

 <?xml version="1.0" encoding="utf-8" ?>
 <nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-      throwExceptions="true"
+      throwConfigExceptions="true"
+      throwExceptions="false"
 	  internalLogFile="Logs/internal-nlog.txt"
 	  internalLogLevel="Trace">
 
 	<targets>
 		<!-- Write logs to File -->
-		<target xsi:type="File" name="fileLog" fileName="C:/coscine/logs/${assembly-name}/${assembly-version}/log-${shortdate}.log" >
-			<layout xsi:type="CompoundLayout">
-				<layout xsi:type="JsonLayout" EscapeForwardSlash="true">
-					<attribute layout="${longdate}" name="Timestamp"/>
-					<attribute layout="${level:upperCase=true}" name="Level"/>
-					<attribute layout="${message}" name="Message"/>
-					<attribute layout="${exception:format=tostring,StackTrace}" name="Exception"/>
-					<attribute layout="${ndlc}" name="Context"/>
-					<attribute layout="${event-properties:item=Metric}" name="Alarm" encode="false"/>
-					<attribute name="EventProperties" encode="false" >
-						<layout xsi:type='JsonLayout' includeAllProperties="true"  maxRecursionLimit="2"/>
-					</attribute>
+		<target xsi:type="FallbackGroup" 
+			name="fileGroup">
+			<target 
+				xsi:type="File" 
+				name="fileLogD" 
+				fileName="D:/coscine/logs/${assembly-name}/${assembly-version}/log-${shortdate}.log"
+				maxArchiveFiles="7"
+			>
+				<layout xsi:type="CompoundLayout">
+					<layout xsi:type="JsonLayout" EscapeForwardSlash="true">
+						<attribute layout="${longdate}" name="Timestamp"/>
+						<attribute layout="${level:upperCase=true}" name="Level"/>
+						<attribute layout="${message}" name="Message"/>
+						<attribute layout="${exception:format=tostring,StackTrace}" name="Exception"/>
+						<attribute layout="${ndlc}" name="Context"/>
+						<attribute layout="${event-properties:item=Metric}" name="Alarm" encode="false"/>
+						<attribute name="EventProperties" encode="false" >
+							<layout xsi:type='JsonLayout' includeAllProperties="true"  maxRecursionLimit="2"/>
+						</attribute>
+					</layout>
+					<layout xsi:type='SimpleLayout' text="," />
 				</layout>
-				<layout xsi:type='SimpleLayout' text="," />
-			</layout>
+			</target>
+			<target 
+				xsi:type="File" 
+				name="fileLogC" 
+				fileName="C:/coscine/logs/${assembly-name}/${assembly-version}/log-${shortdate}.log"
+				maxArchiveFiles="7"
+			>
+				<layout xsi:type="CompoundLayout">
+					<layout xsi:type="JsonLayout" EscapeForwardSlash="true">
+						<attribute layout="${longdate}" name="Timestamp"/>
+						<attribute layout="${level:upperCase=true}" name="Level"/>
+						<attribute layout="${message}" name="Message"/>
+						<attribute layout="${exception:format=tostring,StackTrace}" name="Exception"/>
+						<attribute layout="${ndlc}" name="Context"/>
+						<attribute layout="${event-properties:item=Metric}" name="Alarm" encode="false"/>
+						<attribute name="EventProperties" encode="false" >
+							<layout xsi:type='JsonLayout' includeAllProperties="true"  maxRecursionLimit="2"/>
+						</attribute>
+					</layout>
+					<layout xsi:type='SimpleLayout' text="," />
+				</layout>
+			</target>
 		</target>
 
 		<!-- Write colored logs to Console -->
@@ -37,7 +67,7 @@
 
 	<rules>
 		<!--All logs, including from Microsoft, Level Trace-->
-		<logger name="*" minlevel="Trace" writeTo="fileLog">
+		<logger name="*" minlevel="Trace" writeTo="fileGroup">
 		</logger>
 
 		<!--All logs, including from Microsoft, Level Info-->