Build arg list with an array

This should avoid an issue with parsing the arg list later on, that is
somehow triggered by two semicolons in the string

Author: abonie

eng/build.sh

@@ -239,13 +239,14 @@ function Test() {
     testbatchsuffix="_batch$testbatch"
   fi
   testlogpath="$artifacts_dir/TestResults/$configuration/${projectname}_$targetframework$testbatchsuffix.trx"
-  args="test \"$testproject\" --no-build -c $configuration -f $targetframework --logger \"trx;LogFileName=$testlogpath\" --logger \"console;verbosity=normal\" --blame-hang-timeout 5minutes --results-directory $artifacts_dir/TestResults/$configuration"
+  
+  args=(test "$testproject" --no-build -c "$configuration" -f "$targetframework" --logger "trx;LogFileName=$testlogpath" --logger "console;verbosity=normal" --blame-hang-timeout 5minutes --results-directory "$artifacts_dir/TestResults/$configuration")
 
   if [[ "$testbatch" != "" ]]; then
-    args="$args --filter batch=$testbatch"
+    args+=(--filter "batch=$testbatch")
   fi
 
-  "$DOTNET_INSTALL_DIR/dotnet" $args || exit $?
+  "$DOTNET_INSTALL_DIR/dotnet" "${args[@]}" || exit $?
 }
 
 function BuildSolution {