fix: rename get_users to get_os_users for napalm-device-types 4.7

napalm-device-types 4.7 renamed OSDriver.get_users to get_os_users:
NAPALM's own get_users has another shape and a stub on every driver, so
hasattr could not tell the two apart. BsdDriver now implements
get_os_users with the same return shape and leaves NAPALM's get_users
alone.

Require napalm-device-types>=4.7.1 and bump the version to 0.2.0.

tests/test_drivers.py

@@ -96,7 +96,7 @@ class TestIdentity:
             "get_route_to",
             "get_arp_table",
             "get_lldp_neighbors",
-            "get_users",
+            "get_os_users",
             "get_processes",
             "get_cron_jobs",
         ],
@@ -104,6 +104,13 @@ class TestIdentity:
     def test_implements_what_the_poll_reads(self, cls, getter):
         """netOrk asks whether a getter is overridden, not merely present."""
         assert getattr(cls, getter) is not getattr(NetworkDriver, getter, None)
+        assert getattr(cls, getter) is not getattr(OSDriver, getter, None)
+
+    @pytest.mark.parametrize("cls", [FreeBSDDriver, OpenBSDDriver])
+    def test_leaves_napalms_get_users_alone(self, cls):
+        """NAPALM's get_users is a different getter; the host's accounts are get_os_users."""
+        assert "get_users" not in vars(BsdDriver)
+        assert "get_users" not in vars(cls)
 
 
 class TestFacts:
@@ -177,8 +184,8 @@ class TestRoutesAndNeighbours:
 
 
 class TestAccountsAndProcesses:
-    def test_users(self):
-        users = _freebsd_host().get_users()
+    def test_os_users(self):
+        users = _freebsd_host().get_os_users()
         assert next(u for u in users if u["username"] == "root")["groups"] == ["wheel", "operator"]
 
     def test_processes(self):