[WEB-3707] pytest based test suite for apiserver (#7010)

* pytest bases tests for apiserver

* Trimmed spaces

* Updated .gitignore for pytest local files

apiserver/requirements/test.txt

@@ -1,4 +1,12 @@
 -r base.txt
-# test checker
-pytest==7.1.2
-coverage==6.5.0
+# test framework
+pytest==7.4.0
+pytest-django==4.5.2
+pytest-cov==4.1.0
+pytest-xdist==3.3.1
+pytest-mock==3.11.1
+factory-boy==3.3.0
+freezegun==1.2.2
+coverage==7.2.7
+httpx==0.24.1
+requests==2.31.0