package/zfs: add test case for musl toolchain

Signed-off-by: José Luis Salvador Rufo <salvador.joseluis@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

support/testing/tests/package/test_zfs.py

@@ -73,3 +73,8 @@ class TestZfsUclibc(TestZfsBase):
         """
 
 
+class TestZfsMusl(TestZfsBase):
+    config = TestZfsBase.config + \
+        """
+        BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_X86_64_MUSL_STABLE=y
+        """