Phase 2 of Appr migration

Backfills the new tables from the old ones, and switches all code to read and write from the new tables

data/migrations/versions/5d463ea1e8a8_backfill_new_appr_tables.py

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+"""Backfill new appr tables
+
+Revision ID: 5d463ea1e8a8
+Revises: 610320e9dacf
+Create Date: 2018-07-08 10:01:19.756126
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '5d463ea1e8a8'
+down_revision = '610320e9dacf'
+
+from alembic import op
+import sqlalchemy as sa
+from util.migrate.table_ops import copy_table_contents
+
+def upgrade(tables, tester):
+    conn = op.get_bind()
+
+    copy_table_contents('blob', 'apprblob', conn)
+    copy_table_contents('manifest', 'apprmanifest', conn)
+    copy_table_contents('manifestlist', 'apprmanifestlist', conn)
+    copy_table_contents('blobplacement', 'apprblobplacement', conn)
+    copy_table_contents('manifestblob', 'apprmanifestblob', conn)
+    copy_table_contents('manifestlistmanifest', 'apprmanifestlistmanifest', conn)
+    copy_table_contents('tag', 'apprtag', conn)
+
+def downgrade(tables, tester):
+    pass