Bump to new fuel-devops commit

- new options: list-old and erase-old

Change-Id: I39d7cc15a78787c23ecd49e7531d23ec164e502e
diff --git a/tcp_tests/requirements.txt b/tcp_tests/requirements.txt
index da56a73..26b84b9 100644
--- a/tcp_tests/requirements.txt
+++ b/tcp_tests/requirements.txt
@@ -1,5 +1,5 @@
 # git+git://github.com/openstack/fuel-devops.git@887368d#egg=project[postgre]   # Use this requirement for PostgreSQL
-git+git://github.com/openstack/fuel-devops.git@887368d   # Use this requirement for Sqlite3, or if requirements for PostgreSQL are already installed
+git+git://github.com/openstack/fuel-devops.git@e115ef4   # Use this requirement for Sqlite3, or if requirements for PostgreSQL are already installed
 git+git://github.com/dis-xcom/fuel-devops-driver-ironic
 paramiko
 six