Let's try building the Fedora shim without any changes

This is a short term solution.  We use shim blobs from bootstrap:master
directly and we don't rebuild anything.  We cannot provide the signed
binaries because they're only available in shim-0.8, which cannot be
rebuilt anymore and even if it could, we couldn't sign it anyway.

In the long term 0.8 shouldn't be needed and shim:master should provide
the signed modern blobs.

Fedora 27 only.

Signed-off-by: Petr Šabata <contyk@redhat.com>

host.yaml

@@ -10,10 +10,8 @@ data:
     dependencies:
         buildrequires:
             bootstrap: master
-            shim: master
         requires:
             platform: master
-            shim: master
     references:
         community: https://fedoraproject.org/wiki/Host_and_Platform
         documentation: https://github.com/fedora-modularity/hp
@@ -60,11 +58,11 @@ data:
                 rationale: >-
                     Autogenerated by Host & Platform tooling.
                 ref: f8ed1b576233d3808fd44373d13c76749c1c159f
-            # shim-signed-0.8-10
+            # shim-signed-13-0.5
             shim-signed:
                 rationale: >-
                     Provides the signed binaries.
-                ref: '13-modularity'
+                ref: db207c6fdcdc01b40859a05922654210069fa40e
             # syslinux-6.04-0.5.fc27
             syslinux:
                 rationale: >-