bitbake: bitbake: toaster: Add is_image field to the Recipe model

Added new field is_image to the Recipe model.
Made sure is_image is populated when layer sources are imported.
Made sure the change doesn't break loading old style layer sources.

Tested by loading data from layers.pythonanywhere.com and
from layers.openembedded.org.

[YOCTO: #7571]

(Bitbake rev: 3ac0ba73790b8f68567daa2de313c78053411fbb)

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Alexandru DAMIAN <alexandru.damian@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/toaster/orm/models.py

@@ -586,6 +586,7 @@ class Recipe(models.Model):
     bugtracker = models.URLField(blank=True)
     file_path = models.FilePathField(max_length=255)
     pathflags = models.CharField(max_length=200, blank=True)
+    is_image = models.BooleanField(default=False)
 
     def get_layersource_view_url(self):
         if self.layer_source is None:
@@ -938,6 +939,8 @@ class LayerIndexLayerSource(LayerSource):
                 ro.homepage = ri['homepage']
                 ro.bugtracker = ri['bugtracker']
                 ro.file_path = ri['filepath'] + "/" + ri['filename']
+                if 'inherits' in ri:
+                    ro.is_image = 'image' in ri['inherits'].split()
                 ro.save()
             except:
                 #print "Duplicate Recipe, ignoring: ", vars(ro)