test(integration): parameterize tsa url in tsa workflow

Signed-off-by: Vitor Mattos <1079143+vitormattos@users.noreply.github.com>

Author: vitormattos

tests/integration/features/sign/tsa.feature

@@ -10,7 +10,7 @@ Feature: TSA Integration - End-to-End Workflow
 
   Scenario: TSA workflow - Successfully signs document with timestamp
     Given run the command "config:app:set libresign signing_mode --value=sync --type=string" with result code 0
-    And run the command "config:app:set libresign tsa_url --value=https://freetsa.org/tsr --type=string" with result code 0
+    And run the command "config:app:set libresign tsa_url --value=${LIBRESIGN_TSA_URL:-https://freetsa.org/tsr} --type=string" with result code 0
     And run the command "config:app:set libresign tsa_auth_type --value=none --type=string" with result code 0
     And sending "post" to ocs "/apps/provisioning_api/api/v1/config/apps/libresign/identify_methods"
       | value | (string)[{"name":"account","enabled":true,"mandatory":true,"signatureMethods":{"clickToSign":{"enabled":true}},"signatureMethodEnabled":"clickToSign"}] |