Migrate to yhttp-dev >= 3.1

.flake8

@@ -1,5 +1,5 @@
 [flake8]
-ignore = RST303,RST304,W503
+ignore = W503
 per-file-ignores =
 	yhttp/ext/dbmanager/__init__.py: F401
-	tests/conftest.py: F401
+	tests/conftest.py: F401, F811

requirements-ci.txt

@@ -6,3 +6,4 @@ coveralls
 pytest >= 4.4.0
 pytest-cov
 flake8
+yhttp-dev >= 3.1

tests/conftest.py

@@ -1,24 +1,15 @@
 import os
 
 import pytest
+from yhttp.dev.fixtures import cicd
 from yhttp.ext.dbmanager import PostgresqlManager
 
 
-CICD = 'CI' in os.environ \
-    and os.environ['CI'] \
-    and 'GITHUB_RUN_ID' in os.environ
-
-
-@pytest.fixture
-def cicd():
-    return CICD
-
-
 @pytest.fixture
 def dbmanager(cicd):
-    host = CICD and 'localhost' or None
-    user = CICD and 'postgres' or None
-    pass_ = CICD and 'postgres' or None
+    host = cicd and 'localhost' or None
+    user = cicd and 'postgres' or None
+    pass_ = cicd and 'postgres' or None
     return PostgresqlManager(
         host=os.environ.get('YHTTP_DB_DEFAULT_HOST', host),
         user=os.environ.get('YHTTP_DB_DEFAULT_ADMINUSER', user),