Don't include all types in Vm children

The parent class includes all classes (that are VMs)
No reason to include a `type` query.

Before
======

```
vmdb(dev)> puts Vm.all.to_sql
SELECT "vms".* FROM "vms"
WHERE "vms"."type" IN ('Vm', 'VmServer',
  'ManageIQ::Providers::PhysicalInfraManager::Vm', 'ManageIQ::Providers::InfraManager::Vm',
  'ManageIQ::Providers::CloudManager::Vm', 'ManageIQ::Providers::CiscoIntersight::PhysicalInfraManager::Vm',
  'ManageIQ::Providers::Vmware::InfraManager::Vm', 'ManageIQ::Providers::Ovirt::InfraManager::Vm',
  'ManageIQ::Providers::Nutanix::InfraManager::Vm', 'ManageIQ::Providers::Kubevirt::InfraManager::Vm',
  'ManageIQ::Providers::IbmPowerHmc::InfraManager::Vm', 'ManageIQ::Providers::Redhat::InfraManager::Vm',
  'ManageIQ::Providers::Openshift::InfraManager::Vm', 'ManageIQ::Providers::IbmPowerHmc::InfraManager::Vios',
  'ManageIQ::Providers::IbmPowerHmc::InfraManager::Lpar', 'ManageIQ::Providers::Vmware::CloudManager::Vm',
  'ManageIQ::Providers::OracleCloud::CloudManager::Vm', 'ManageIQ::Providers::Openstack::CloudManager::Vm',
  'ManageIQ::Providers::IbmCloud::VPC::CloudManager::Vm', 'ManageIQ::Providers::IbmCloud::PowerVirtualServers::CloudManager::Vm',
  'ManageIQ::Providers::Google::CloudManager::Vm', 'ManageIQ::Providers::AzureStack::CloudManager::Vm',
  'ManageIQ::Providers::Azure::CloudManager::Vm', 'ManageIQ::Providers::Amazon::CloudManager::Vm',
  'ManageIQ::Providers::IbmPowerVc::CloudManager::Vm', 'ManageIQ::Providers::IbmCic::CloudManager::Vm')
  AND "vms"."template" = FALSE
=> nil
vmdb(dev)> puts ManageIQ::Providers::Vmware::InfraManager::Vm.all.to_sql
SELECT "vms".* FROM "vms"
WHERE "vms"."type" = 'ManageIQ::Providers::Vmware::InfraManager::Vm'
  AND "vms"."template" = FALSE
```

After
=====

```
vmdb(dev)> puts Vm.all.to_sql
SELECT "vms".* FROM "vms"
WHERE "vms"."template" = FALSE
=> nil
vmdb(dev)> puts ManageIQ::Providers::Vmware::InfraManager::Vm.all.to_sql
SELECT "vms".* FROM "vms"
WHERE "vms"."type" = 'ManageIQ::Providers::Vmware::InfraManager::Vm'
  AND "vms"."template" = FALSE
```

Author: kbrock

app/models/miq_template.rb

@@ -16,6 +16,11 @@ def self.base_model
     MiqTemplate
   end
 
+  # Don't tack on `type IN []` query for the top level classes (default scope already filters out the vms)
+  def self.finder_needs_type_condition?
+    self < base_model
+  end
+
   def self.corresponding_model
     module_parent::Vm
   end

app/models/vm.rb

@@ -14,6 +14,11 @@ def self.base_model
     Vm
   end
 
+  # Don't tack on `type IN []` query for the top level classes (default scope already filters out the templates)
+  def self.finder_needs_type_condition?
+    self < base_model
+  end
+
   def self.corresponding_model
     if self == Vm
       MiqTemplate