test: Mark Django 1.10 tests required

- With #15990 in Django 1.10 tests should be passing now.

.travis.yml

@@ -158,17 +158,14 @@ matrix:
       name: 'Acceptance'
       env: TEST_SUITE=acceptance USE_SNUBA=1
 
-    # allowed to fail
     - <<: *postgres_default
       name: '[Django 1.10] Backend [Postgres] (1/2)'
       env: DJANGO_VERSION=">=1.10,<1.11" TEST_SUITE=postgres DB=postgres TOTAL_TEST_GROUPS=2 TEST_GROUP=0
 
-    # allowed to fail
     - <<: *postgres_default
       name: '[Django 1.10] Backend [Postgres] (2/2)'
       env: DJANGO_VERSION=">=1.10,<1.11" TEST_SUITE=postgres DB=postgres TOTAL_TEST_GROUPS=2 TEST_GROUP=1
 
-    # allowed to fail
     - <<: *acceptance_default
       name: '[Django 1.10] Acceptance'
       env: DJANGO_VERSION=">=1.10,<1.11" TEST_SUITE=acceptance USE_SNUBA=1 PERCY_ENABLE=0
@@ -239,7 +236,6 @@ matrix:
       before_script:
         - psql -c 'create database sentry;' -U postgres
 
-    # allowed to fail
     - python: 2.7
       name: '[Django 1.10] Snuba Integration'
       env: DJANGO_VERSION=">=1.10,<1.11" TEST_SUITE=snuba USE_SNUBA=1 SENTRY_ZOOKEEPER_HOSTS=localhost:2181 SENTRY_KAFKA_HOSTS=localhost:9092
@@ -283,10 +279,6 @@ matrix:
 
   allow_failures:
     - name: 'Storybook Deploy'
-    - name: '[Django 1.10] Backend [Postgres] (1/2)'
-    - name: '[Django 1.10] Backend [Postgres] (2/2)'
-    - name: '[Django 1.10] Acceptance'
-    - name: '[Django 1.10] Snuba Integration'
 
 notifications:
   webhooks: