Extend timeout for get_progressive_build_output for cases when Jenkins is in upgrade process

	PROD-36273


Change-Id: I6102ca3986ab963aed4ae8446ee7fc2d3928d953
diff --git a/tcp_tests/managers/jenkins/client.py b/tcp_tests/managers/jenkins/client.py
index a31bbc8..eb67074 100644
--- a/tcp_tests/managers/jenkins/client.py
+++ b/tcp_tests/managers/jenkins/client.py
@@ -261,7 +261,7 @@
     def get_build_output(self, name, build_id):
         return self.__client.get_build_console_output(name, build_id)
 
-    @retry(max_count=12)
+    @retry(max_count=20, sleep_before_retry=30)
     def get_progressive_build_output(self, name, build_id, start=0):
         '''Get build console text.