[ADD] b_shift: Set configurable limit to unsubscribe regular worker

This adds a configurable limit under which the regular worker is
unsubscribed. The regular worker is unsubscribed when the sum of his
shift counter and his compensation shift counter reach the configured
limit.

beesdoo_shift/__openerp__.py

@@ -13,7 +13,7 @@
     'website': "https://github.com/beescoop/Obeesdoo",
 
     'category': 'Cooperative management',
-    'version': '9.0.1.1.1',
+    'version': '9.0.1.2.0',
 
     'depends': ['beesdoo_base'],
 

beesdoo_shift/data/system_parameter.xml

@@ -27,4 +27,8 @@
         <field name="key">irregular_counter_to_unsubscribe</field>
         <field name="value">-4</field>
     </record>
-</odoo>
+    <record id="regular_counter_to_unsubscribe" model="ir.config_parameter">
+        <field name="key">regular_counter_to_unsubscribe</field>
+        <field name="value">-4</field>
+    </record>
+</odoo>

beesdoo_shift/models/cooperative_status.py

@@ -212,10 +212,11 @@ class CooperativeStatus(models.Model):
 
     def _set_regular_status(self, grace_delay, alert_delay):
         self.ensure_one()
+        counter_unsubscribe = int(self.env['ir.config_parameter'].get_param('regular_counter_to_unsubscribe', -4))
         ok = self.sr >= 0 and self.sc >= 0
         grace_delay = grace_delay + self.time_extension
 
-        if self.sr < -1 or self.unsubscribed:
+        if (self.sr + self.sc) <= counter_unsubscribe or self.unsubscribed:
             self.status = 'unsubscribed'
             self.can_shop = False
         elif self.today >= self.temporary_exempt_start_date and self.today <= self.temporary_exempt_end_date: