imp(tests): integration tests setup (#1196)

* first pass

* latest

* working tests

* github actions

* remove unnecessary change

* remove unnecessary steps

* remove unnecessary import

* remove unnecessary change

* Update .github/workflows/test.yml

Co-authored-by: yihuang <huang@crypto.com>

* update .gitignore

* update github actions

* change evm denomination

* change evm denomination

* send tests to tests folder

* Delete result

* update go version

Co-authored-by: yihuang <huang@crypto.com>
Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

.github/workflows/test.yml

@@ -102,6 +102,28 @@ jobs:
           make test-integration
         if: env.GIT_DIFF
 
+  integration_tests:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: cachix/install-nix-action@v15
+      - uses: cachix/cachix-action@v10
+        with:
+          name: ethermint
+          signingKey: "${{ secrets.CACHIX_SIGNING_KEY }}"
+      - name: Run integration tests
+        run: make run-integration-tests
+        if: env.GIT_DIFF
+      - name: 'Tar debug files'
+        if: failure()
+        run: tar cfz debug_files.tar.gz -C /tmp/pytest-of-runner .
+      - uses: actions/upload-artifact@v2
+        if: failure()
+        with:
+          name: debug-files
+          path: debug_files.tar.gz
+          if-no-files-found: ignore
+
   test-sim-nondeterminism:
     runs-on: ubuntu-latest
     timeout-minutes: 25