Expand launch infrastructure and make dependencies use it

Adds support for launching MicroVMs and networking multiple machines to the launch infrastructure
and its consumers. Also makes use of our own qboot. Also converts ktests to that infra and and fixes
the issue making it succeed if the VM couldn't be started.

Test Plan: E2E tests & ktests still pass

X-Origin-Diff: phab/D571
GitOrigin-RevId: 0f317f6d8a06e4a3da343b4a7ff5c87918401426
diff --git a/core/tools/ktest/ktest.bzl b/core/tools/ktest/ktest.bzl
index 03a7d5c..aef749b 100644
--- a/core/tools/ktest/ktest.bzl
+++ b/core/tools/ktest/ktest.bzl
@@ -57,5 +57,6 @@
             "//core/tools/ktest",
             ":test_initramfs",
             "//core/tools/ktest:linux-testing",
+            "@com_github_bonzini_qboot//:qboot-bin",
         ],
-    )
\ No newline at end of file
+    )