feat!: report hosts and licenses as facts, not warnings (0.2.0)

get_device_warnings is gone; netOrk names the warnings from facts
(netOrk #1111). get_hypervisor_hosts() reports each host's connection
state, maintenance mode, configuration issues and managing vCenter;
get_licenses() the assigned licenses with the edition key as edition,
never the key itself.

The reach stays: the ESXi driver reports connected as None (a
disconnected host could not have answered), and managed_by only for a
host it reached directly. parse/warnings.py is replaced by
parse/hosts.py and parse/licenses.py.

tests/test_drivers.py

@@ -72,7 +72,8 @@ class TestIdentity:
             "rollback_vm_snapshot",
             "get_vm_storage_pools",
             "get_virtual_networks",
-            "get_device_warnings",
+            "get_hypervisor_hosts",
+            "get_licenses",
         ],
     )
     @pytest.mark.parametrize("cls", DRIVERS)
@@ -204,9 +205,22 @@ class TestEsxiGetters:
         with pytest.raises(RuntimeError, match="no host"):
             esxi.get_facts()
 
-    def test_warnings(self, esxi, esxi_host):
+    def test_host_facts(self, esxi, esxi_host):
         esxi_host["runtime.inMaintenanceMode"] = True
-        assert [w["code"] for w in esxi.get_device_warnings()] == ["vmware_host_maintenance_mode"]
+        assert [h["maintenance"] for h in esxi.get_hypervisor_hosts()] == [True]
+
+    def test_license_facts(self, esxi):
+        esxi._inventory.data["licenses"] = [{"editionKey": "esxBasic", "name": "Free"}]
+        assert esxi.get_licenses() == [{"name": "Free", "status": "active", "edition": "esxBasic"}]
+
+    @pytest.mark.parametrize("cls", DRIVERS)
+    def test_no_warnings_of_their_own(self, cls):
+        """Hosts and licenses are facts; the caller names the warnings (netOrk #1111)."""
+        assert not any(
+            "get_device_warnings" in vars(c)
+            for c in cls.__mro__
+            if c.__module__.startswith("napalm_vmware")
+        )
 
     def test_storage_and_networks(self, esxi):
         assert list(esxi.get_vm_storage_pools())