qa: adding clay test to thrash erasure code big

Currently we don't have any clay test in the erasure code big tests
adding also clay tests.

Signed-off-by: Nitzan Mordechai <nmordech@redhat.com>

diff --git a/qa/suites/rados/thrash-erasure-code-big/workloads/ec-rados-plugin=clay-k=4-m=2.yaml b/qa/suites/rados/thrash-erasure-code-big/workloads/ec-rados-plugin=clay-k=4-m=2.yaml
new file mode 120000 (symlink)
index 0000000..08155ed
--- /dev/null
+++ b/qa/suites/rados/thrash-erasure-code-big/workloads/ec-rados-plugin=clay-k=4-m=2.yaml
@@ -0,0 +1 @@
+.qa/erasure-code/ec-rados-plugin=clay-k=4-m=2.yaml
\ No newline at end of file