Update performance test pipeline to use poetry

Start using poetry to manage performance test pipeline's requirements
and run test within the poetry created environment.

Author: elyezer

.github/workflows/tester.yml

@@ -13,15 +13,18 @@ jobs:
       uses: actions/setup-python@v1
       with:
         python-version: 3.6
-    - name: Install dependencies
+    - name: Upgrade pip
       run: |
         python -m pip install --upgrade pip
-        pip install python-dateutil pytest
-        pip install .
-        pip install -r ./test/perf/requirements.txt
+    - name: Install poetry
+      run: |
+        pip install poetry
+    - name: Install receptor and its dev/test dependencies
+      run: |
+        poetry install
     - name: Perform integration tests
       run: |
-        pytest ./test/perf/ -s
+        poetry run pytest ./test/perf/ -s
   unit:
     name: Unit Tests
     runs-on: ubuntu-latest

poetry.lock

@@ -17,6 +17,11 @@ pytest-asyncio = "^0.10.0"
 flake8 = "^3.7.9"
 pyyaml = "^5.2"
 wait-for = "^1.1.1"
+attrs = "^19.3.0"
+click = "^7.0"
+pyparsing = "^2.4.5"
+requests = "^2.22.0"
+wait_for = "^1.1.1"
 
 [build-system]
 requires = ["poetry>=0.12"]