Update global-jjb to v0.50.0-13-g1fb55e8

Updates:
jjb/lf-python-jobs.yaml
jjb/lf-release-jobs.yaml
shell/jenkins-configure-clouds.sh

Signed-off-by: Aric Gardner <agardner@linuxfoundation.org>
Change-Id: I38e080059022cb83e83e45b05ace947fd2b0019b

diff --git a/global-jjb b/global-jjb
index 72050cc..1fb55e8 160000 (submodule)
--- a/global-jjb
+++ b/global-jjb
@@ -1 +1 @@
-Subproject commit 72050cce2c57e8eb314b2f518b846f7810595fbb
+Subproject commit 1fb55e807d49e36b27d94d0c411c6907d2216068