Also install preinstallation requirements

Author: jtraglia

solidity_deposit_contract/Makefile

@@ -30,6 +30,7 @@ install_deposit_contract_web3_tester:
 	@cd $(DEPOSIT_CONTRACT_TESTER_DIR); \
 	python3 -m venv venv; \
 	source venv/bin/activate; \
+	python3 -m pip install -r ../../requirements_preinstallation.txt; \
 	python3 -m pip install -r requirements.txt
 
 test_deposit_contract_web3_tests:
@@ -38,4 +39,4 @@ test_deposit_contract_web3_tests:
 	python3 -m pytest .
 
 clean:
-	@git clean -fdx
+	@git clean -fdx