feat: VM provisioning, and reboot_host on ESXi

create_vm_from_cloud_init takes the same qcow2/raw cloud images netOrk
offers for Proxmox. ESXi can neither boot nor download them, so the
driver does both: download with checksum check and one retry, convert
with qemu-img to a streamOptimized VMDK (cached by URL), import through
a minimal OVF descriptor over NFC, pin requested MACs, grow the disk,
and attach a NoCloud seed ISO placed next to the VM's files. NoCloud
rather than guestinfo because it needs nothing in the guest; the
user-data installs open-vm-tools, which the driver declares as its
guest agent. A failure after the import removes the VM again.

Placement is a pure decision over inventory rows: a connected host
outside maintenance mode that sees the datastore and every port group,
with the resource pool and VM folder found by walking up to the
datacenter -- one path for a standalone host and for a vCenter.

Two faults vcsim surfaced and the tests now pin: a chunked upload body
next to a Content-Length is refused with 500, so the disk goes up as a
sized file object that also reports lease progress; and a device edit
replaces the device as sent, so disk and NIC edits start from the live
objects, backing included (vcsim panicked on a disk without one).

destroy_vm, get_vm_status, get_network_targets (port groups with their
fixed VLAN) and get_image_storages complete the contract.

reboot_host on ESXi uses RebootHost_Task and refuses outside
maintenance mode: force=True would cut power to running VMs.

Tested against vcsim in ESXi and vCenter mode, end to end.

napalm_vmware/esxi.py

@@ -14,9 +14,10 @@ from napalm_vmware.base import VmwareBaseDriver
 from napalm_vmware.parse.facts import esxi_facts
 from napalm_vmware.parse.interfaces import host_interfaces, host_interfaces_ip
 from napalm_vmware.parse.lldp import lldp_neighbors
+from napalm_vmware.provisioning import VmwareProvisioningMixin
 
 
-class VmwareEsxiDriver(VmwareActionsMixin, VmwareBaseDriver):
+class VmwareEsxiDriver(VmwareProvisioningMixin, VmwareActionsMixin, VmwareBaseDriver):
     """One ESXi host. Its VMs, vmnics, vmkernel NICs, datastores and port groups."""
 
     DRIVER_NAME = "vmware_esxi"
@@ -46,6 +47,22 @@ class VmwareEsxiDriver(VmwareActionsMixin, VmwareBaseDriver):
     def get_interfaces_ip(self) -> dict[str, dict[str, Any]]:
         return host_interfaces_ip(self._host())
 
+    def reboot_host(self) -> None:
+        """Restart the host, which has to be in maintenance mode.
+
+        ``force=True`` would restart a host with running VMs by cutting their
+        power. Evacuating them -- or deciding not to -- is the operator's call,
+        made by entering maintenance mode in vSphere first.
+        """
+        host = self._host()
+        if not host.get("runtime.inMaintenanceMode"):
+            raise RuntimeError(
+                f"{host.get('name', self.hostname)} is not in maintenance mode; "
+                "enter it in vSphere first so running VMs are not powered off"
+            )
+        # The task finishes as the host goes down; there is nothing to wait for.
+        invoke(self._mo(vim.HostSystem, host["_moref"]).RebootHost_Task, force=False)
+
     def get_lldp_neighbors(self) -> dict[str, list[dict[str, str]]]:
         network_system = self._host().get("configManager.networkSystem")
         if not network_system: