Update offline deployment test

Change-Id: I3c935be8ad6f038ce6c25221de6d09e93619c94d
diff --git a/tcp_tests/managers/jenkins/client.py b/tcp_tests/managers/jenkins/client.py
index f781305..474713c 100644
--- a/tcp_tests/managers/jenkins/client.py
+++ b/tcp_tests/managers/jenkins/client.py
@@ -63,3 +63,6 @@
             timeout=timeout,
             timeout_msg='Timeout waiting, job {0} are not finished "{1}" build'
                         ' still'.format(name, build_id))
+
+    def get_build_output(self, name, build_id):
+        return self.__client.get_build_console_output(name, build_id)