Fix integration test failure by removing no-cache-dir (microsoft#650)

* Pull code (#22)

* Support distributed job for frameworkcontroller (microsoft#612)

support distributed job for frameworkcontroller

* Multiphase doc (microsoft#519)

* multiPhase doc

* updates

* updates

* Add time parser for 'nnictl update duration' (microsoft#632)

Current nnictl update duration only support seconds unit, add a parser for this command to support {s, m, h, d}

* fix experiment state bug (microsoft#629)

* update top README.md (microsoft#622)

* Update README.md

* update (microsoft#634)

* Integration tests refactoring (microsoft#625)

* Integration test refactoring (#21) (microsoft#616)

* Integration test refactoring (#21)

* Refactoring integration tests

* test metrics

* update azure pipeline

* updates

* updates

* updates

* updates

* updates

* updates

* updates

* updates

* updates

* updates

* updates

* updates

* updates

* updates

* updates

* updates

* updates

* updates

* updates

* updates

* update trigger

* Integration test refactoring (microsoft#618)

* updates

* updates

* update pipeline (microsoft#619)

* update pipeline

* updates

* updates

* updates

* updates

* updates

* test pipeline (microsoft#623)

* test pipeline

* updates

* updates

* updates

* Update integration test (microsoft#624)

* Update integration test

* updates

* updates

* updates

* updates

* updates

* updates

* Revert "Pull code (#22)"

This reverts commit 62fc165.

* Fix integration test failure by removing no-cache-dir

Makefile

@@ -1,6 +1,6 @@
 # Setting variables
 SHELL := /bin/bash
-PIP_INSTALL := python3 -m pip install --no-cache-dir
+PIP_INSTALL := python3 -m pip install
 PIP_UNINSTALL := python3 -m pip uninstall
 
 ## Colorful output