fix venv_path definition

Change-Id: Ia7dbbbb9ceb250a33a653b03fee64c6da9ea6b5b
diff --git a/cloud-deploy-pipeline.groovy b/cloud-deploy-pipeline.groovy
index 0b181f9..53e8c90 100644
--- a/cloud-deploy-pipeline.groovy
+++ b/cloud-deploy-pipeline.groovy
@@ -55,8 +55,8 @@
 def saltMaster
 
 if (STACK_TYPE == 'aws') {
-    def venv_path = 'aws_venv'
-    def env_vars = aws.getEnvVars(AWS_API_CREDENTIALS, AWS_STACK_REGION)
+    venv_path = 'aws_venv'
+    env_vars = aws.getEnvVars(AWS_API_CREDENTIALS, AWS_STACK_REGION)
 }
 
 timestamps {