erasure-code: update ceph-erasure-code-corpus for shec

Update the ceph-erasure-code-corpus submodule to include the hammer shec
checks.

Signed-off-by: Loic Dachary <ldachary@redhat.com>

diff --git a/ceph-erasure-code-corpus b/ceph-erasure-code-corpus
index f1f95a1de9dea91b0f8830a01e8b8673e3f241e1..2a6d6df750b0279215c77051e1c200858e66675c 160000 (submodule)
--- a/ceph-erasure-code-corpus
+++ b/ceph-erasure-code-corpus
@@ -1 +1 @@
-Subproject commit f1f95a1de9dea91b0f8830a01e8b8673e3f241e1
+Subproject commit 2a6d6df750b0279215c77051e1c200858e66675c