title: How to fake migrations for not to create a specific existing intermediary table
body: <p>I have following models</p>
  
  <pre><code>class VucutBolgesi(models.Model):
      site = models.ForeignKey(Site)
      bolge = models.CharField(verbose_name="Bölge", max_length=75)
      hareketler = models.ManyToManyField("Hareket", verbose_name="Hareketler", null=True, blank=True, help_text="Bölgeyi çalıştıran hareketler")
  
  
  class Hareket(models.Model):
      site = models.ForeignKey(Site)
      hareket = models.CharField(verbose_name="Hareket", max_length=75 )
      bolgeler = models.ManyToManyField(VucutBolgesi, verbose_name="Çalıştırdığı Bölgeler", null=True, blank=True,
                                        help_text="Hareketin çalıştırdığı bölgeler")
  </code></pre>
  
  <p>I have the same M2M on both table since I wish to display same intermediate table on both admin forms. They also have to use the same table (not create two separate tables) since one change in one admin form must be reflected to the other. Like, If I add a new <code>Hareket</code> to <code>VucutBolgesi</code> through <code>HareketAdmin</code> then the same result shoudl be visible on <code>VucutBolgesiAdmin</code> too.</p>
  
  <p>For achieving this, I first remove <code>hareketler</code> M2M field from <code>VucutBolgesi</code> so <code>Hareketler</code> model would create the intermediate table. I migrate this and then add <code>hareketler</code> to <code>VucutBolgesi</code> with <code>db_table</code> attribute so it will recognize the same intermediary table.</p>
  
  <p>final look of the field is as folows</p>
  
  <pre><code>hareketler = models.ManyToManyField("Hareket", verbose_name="Hareketler", db_table="antrenman_hareket_bolgeler",
                                      null=True, blank=True, help_text="Bölgeyi çalıştıran hareketler")
  </code></pre>
  
  <p>When I try to migrate this, django throw following exception</p>
  
  <pre><code>django.db.utils.OperationalError: table "antrenman_hareket_bolgeler" already exists
  </code></pre>
  
  <p>How should I fake this migration?</p>
  
  <p>Following is the migration django creates each time I run <code>makemigrations</code></p>
  
  <pre><code>dependencies = [
      ('antrenman', '0005_vucutbolgesi_hareketler'),
  ]
  
  operations = [
      migrations.AddField(
          model_name='vucutbolgesi',
          name='hareketler',
          field=models.ManyToManyField(to='antrenman.Hareket', db_table=b'antrenman_hareket_bolgeler', blank=True, help_text=b'B\xc3\xb6lgeyi \xc3\xa7al\xc4\xb1\xc5\x9ft\xc4\xb1ran hareketler', null=True, verbose_name=b'Hareketler'),
          preserve_default=True,
      ),
  ]
  </code></pre>
  
  <p>Note: Editing related migration file and removing <code>migrations.AddField</code> fo not work since django creates the same <code>migrations.AddField</code> with each <code>makemigrations</code></p>