Add 'build-mode' field for chunks in a stratum

Allowed values:

  staging: build with a staging chroot (default)
  test: build with the host's tools
  bootstrap: build with the host's tools, and do not include this
     chunk in the final stratum artifact

In the past, 'normal mode' has been used to describe building a chunk
with the host's tools. We don't want that mode to ever be used,
because it is a huge hole in reproducability, but we need to keep it
around to avoid making Morph's cmdtest suite depend on Baserock.
Hopefully naming it 'test' should discourage potential abusers.

It is unfortunate that the build tests now take a separate code path
compared to real-world usage of Morph. However, this is necessary to
avoid a circular dependency between Morph's test suite and the
build-essential stratum in Baserock.

We do whole-build testing of Baserock, too, so the 'staging' code path
is still tested outside of Morph. However, testing a staging area
requires populating it with at minimum a working shell, and this is a
bit too complex to go in Morph's test suite.

1 files changed, 4 insertions, 2 deletions

diff --git a/tests.deploy/setup b/tests.deploy/setup
index b0054fa5..584ce039 100755
--- a/tests.deploy/setup
+++ b/tests.deploy/setup
@@ -100,7 +100,8 @@ cat <<EOF > hello-stratum.morph
             "name": "hello",
             "repo": "test:chunk-repo",
             "ref": "farrokh",
-            "build-depends": []
+            "build-depends": [],
+            "build-mode": "test"
         }
     ]
 }
@@ -140,7 +141,8 @@ cat <<EOF > linux-stratum.morph
             "name": "linux",
             "repo": "test:kernel-repo",
             "ref": "master",
-            "build-depends": []
+            "build-depends": [],
+            "build-mode": "test"
         }
     ]
 }