Setup terragrunt modules validation job for integration/terraform repo

Change-Id: I4aa4341b19ee39388c3b65148ac6d15acd88346f
Issue-ID: INT-1713
Signed-off-by: Bartek Grzybowski <b.grzybowski@partner.samsung.com>
diff --git a/jjb/integration/integration-terraform.yaml b/jjb/integration/integration-terraform.yaml
index 76f0866..2a7fc5d 100644
--- a/jjb/integration/integration-terraform.yaml
+++ b/jjb/integration/integration-terraform.yaml
@@ -18,6 +18,10 @@
               tox-dir: 'openlab'
               tox-envs: 'terraform'
               pattern: 'openlab/**'
+        - 'terragrunt':
+              tox-dir: 'terragrunt'
+              tox-envs: 'terragrunt'
+              pattern: 'terragrunt/**'
     stream:
         - 'master':
               branch: 'master'