[FIX] l10n_au,l10n_nz: fix label percentage on gst imports tax

1. Install the Australian Accounting localization pack.
2. Create a Bill, use the existing pre-defined tax, "GST only on
imports".
3. See that the subtotal of the line will be changed to 0.01.
4. See that at the bottom there will be a GST 100000000% amount showing.

The tax data need a upper percentage to avoid the 0.01 rounding issue.

opw-2226119

closes odoo/odoo#48700

Signed-off-by: Nicolas Martinelli (nim) <nim@odoo.com>

addons/l10n_au/data/account_tax_template_data.xml

@@ -471,7 +471,16 @@
         <field name="description">GST Only on Imports</field>
         <field name="type_tax_use">purchase</field>
         <field name="amount_type">percent</field>
-        <field name="amount">100000000</field>
+        <field name="amount">100000000000</field>
+        <!--
+          The tax percentage is so high because on imported goods we
+          needed to link the tax line acknowledgment (not to be paid)
+          on the customer invoice and what need to actually be
+          paid from another invoice given by a clearance house
+          (i.e. customs)
+          For more info see the complete discussion below
+          https://github.com/odoo/odoo/pull/48700#issuecomment-607586417
+        -->
         <field name="price_include" eval="1"/>
         <field name="tax_group_id" ref="tax_group_gst_100000000"/>
         <field name="invoice_repartition_line_ids" eval="[

addons/l10n_nz/data/account_tax_template_data.xml

@@ -246,7 +246,16 @@
         <field name="description">GST Only on Imports</field>
         <field name="type_tax_use">purchase</field>
         <field name="amount_type">percent</field>
-        <field name="amount">100000000</field>
+        <field name="amount">100000000000</field>
+        <!--
+          The tax percentage is so high because on imported goods we
+          needed to link the tax line acknowledgment (not to be paid)
+          on the customer invoice and what need to actually be
+          paid from another invoice given by a clearance house
+          (i.e. customs)
+          For more info see the complete discussion below
+          https://github.com/odoo/odoo/pull/48700#issuecomment-607586417
+        -->
         <field name="price_include">TRUE</field>
         <field name="tax_group_id" ref="tax_group_100000000"/>
         <field name="invoice_repartition_line_ids" eval="[(5, 0, 0),