Updates hydra: bba55fd hydra: deploy: Puppet 8 compatibility

diff --git a/hydra b/hydra
index c850c699883f4a0c1181063903727bcf639049ca..bba55fda49bb11cd0f23ac6fde6becd3aaaac391 160000 (submodule)
--- a/hydra
+++ b/hydra
@@ -1 +1 @@
-Subproject commit c850c699883f4a0c1181063903727bcf639049ca
+Subproject commit bba55fda49bb11cd0f23ac6fde6becd3aaaac391