[16.0][IMP] subscription_oca: recurrent payment

[adasatorres]

This implementation adds an option in the template to create the invoice and automatically create the payment, using the last payment token used by the customer.

[chrisandrewmann]

@adasatorres I did a quick test on runbot.

1. Using "Azure Interior, Brandon Freeman", create saved payment token using "Demo" payment provider
2. Create Subscription Template (monthly), setting the Invoicing Mode to "Invoice & Recurring Payment"
3. Create new Subscription and add a product
4. Manually run the scheduled action "Subscriptions Management"
5. Error thrown below

Traceback (most recent call last):
  File "/opt/odoo/odoo/api.py", line 1013, in get
    cache_value = field_cache[record._ids[0]]
KeyError: 45

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/opt/odoo/odoo/fields.py", line 1161, in __get__
    value = env.cache.get(record, self)
  File "/opt/odoo/odoo/api.py", line 1020, in get
    raise CacheMiss(record, field)
odoo.exceptions.CacheMiss: 'account.move.line(45,).name'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/opt/odoo/odoo/http.py", line 1848, in _serve_db
    return service_model.retrying(self._serve_ir_http, self.env)
  File "/opt/odoo/odoo/service/model.py", line 152, in retrying
    result = func()
  File "/opt/odoo/odoo/http.py", line 1876, in _serve_ir_http
    response = self.dispatcher.dispatch(rule.endpoint, args)
  File "/opt/odoo/odoo/http.py", line 2080, in dispatch
    result = self.request.registry['ir.http']._dispatch(endpoint)
  File "/opt/odoo/odoo/addons/base/models/ir_http.py", line 154, in _dispatch
    result = endpoint(**request.params)
  File "/opt/odoo/odoo/http.py", line 763, in route_wrapper
    result = endpoint(self, *args, **params_ok)
  File "/opt/odoo/addons/web/controllers/dataset.py", line 47, in call_button
    action = self._call_kw(model, method, args, kwargs)
  File "/opt/odoo/addons/web/controllers/dataset.py", line 34, in _call_kw
    return call_kw(Model, method, args, kwargs)
  File "/opt/odoo/odoo/api.py", line 484, in call_kw
    result = _call_kw_multi(method, model, args, kwargs)
  File "/opt/odoo/odoo/api.py", line 469, in _call_kw_multi
    result = method(recs, *args, **kwargs)
  File "/opt/odoo/odoo/addons/base/models/ir_cron.py", line 104, in method_direct_trigger
    self.env.flush_all()
  File "/opt/odoo/odoo/api.py", line 761, in flush_all
    self._recompute_all()
  File "/opt/odoo/odoo/api.py", line 757, in _recompute_all
    self[field.model_name]._recompute_field(field)
  File "/opt/odoo/odoo/models.py", line 6335, in _recompute_field
    field.recompute(records)
  File "/opt/odoo/odoo/fields.py", line 1382, in recompute
    apply_except_missing(self.compute_value, recs)
  File "/opt/odoo/odoo/fields.py", line 1355, in apply_except_missing
    func(records)
  File "/opt/odoo/odoo/fields.py", line 1404, in compute_value
    records._compute_field_value(self)
  File "/opt/odoo/odoo/models.py", line 4276, in _compute_field_value
    fields.determine(field.compute, self)
  File "/opt/odoo/odoo/fields.py", line 98, in determine
    return needle(*args)
  File "/opt/odoo/addons/account/models/account_move_line.py", line 483, in _compute_name
    if not line.name or line._origin.name == line._origin.move_id.payment_reference:
  File "/opt/odoo/odoo/fields.py", line 1187, in __get__
    recs._fetch_field(self)
  File "/opt/odoo/odoo/models.py", line 3245, in _fetch_field
    self._read(fnames)
  File "/opt/odoo/odoo/models.py", line 3322, in _read
    cr.execute(query_str, params + [sub_ids])
  File "/opt/odoo/odoo/sql_db.py", line 324, in execute
    res = self._obj.execute(query, params)
psycopg2.errors.InFailedSqlTransaction: current transaction is aborted, commands ignored until end of transaction block


The above server error caused the following client error:
RPC_ERROR: Odoo Server Error
    RPC_ERROR
        at makeErrorFromResponse (http://oca-contract-16-0-pr1331-62928ebfb7e6.runboat.odoo-community.org/web/assets/429-ecc5975/web.assets_backend.min.js:1003:163)
        at XMLHttpRequest.<anonymous> (http://oca-contract-16-0-pr1331-62928ebfb7e6.runboat.odoo-community.org/web/assets/429-ecc5975/web.assets_backend.min.js:1011:13)