Fix typo in test_check_ssh_injection_on error test

The test case currently has shh instead of ssh.
This commit fixes the typo.

Change-Id: I1e6f926b7d22f48ae56166077659ff3e3d9a1899
Merge "Fix typo in test_check_ssh_injection_on error test"
Merge commit '0f2a0ea76c150d85b3dedeae794571c7e24a62ff' into HEAD