Upgraded firecracker submodule. Orch repo test pass.

root · ustiugov · commit b90f47cbf286 · 2020-06-15T17:41:00.000+01:00
Signed-off-by: Plamen Petrov &lt;plamb0brt@gmail.com&gt;
diff --git a/_submodules/firecracker b/_submodules/firecracker
@@ -1 +1 @@
-Subproject commit 6fd1545222f4f5e01dc3968da819276500296380
+Subproject commit 57f4c7ca14a31c5536f188cacb669d2cad32b9ca
