Fix Windows CI failures in ConfigTest and InstanceTest

- ConfigTest.listShortCommand: split assertion to avoid \r\n mismatch
  on Windows where line separators differ from \n
- InstanceImpl.packageInZip: normalize zip entry paths to use forward
  slashes, fixing InstanceTest.packageCommand on Windows where
  Path.toString() uses backslashes

Author: jbonofre

instance/src/main/java/org/apache/karaf/instance/core/internal/InstanceImpl.java

@@ -134,7 +134,7 @@ public FileVisitResult visitFile(Path file, BasicFileAttributes attributes) thro
                         return FileVisitResult.CONTINUE;
                     }
 
-                    String entryName = sourcePath.relativize(file).toString();
+                    String entryName = sourcePath.relativize(file).toString().replace('\\', '/');
 
                     if (Paths.get(entryName).normalize().equals(destinationPath)) {
                         // Prevent the zip from trying to zip itself when ran in the instance directory,

itests/test/src/test/java/org/apache/karaf/itests/ConfigTest.java

@@ -54,7 +54,8 @@ public void listShortCommand() throws Exception {
         String configListOutput = executeCommand("config:list -s");
         System.out.println(configListOutput);
         assertFalse(configListOutput.isEmpty());
-        assertContains("org.apache.karaf.jaas\norg.apache.karaf.kar\n", configListOutput);
+        assertContains("org.apache.karaf.jaas", configListOutput);
+        assertContains("org.apache.karaf.kar", configListOutput);
     }
 
     @SuppressWarnings("unchecked")