Fix Clock tests 9/10/11 DENY logic

Receiving a DENY on a CLOCK_RATE_SET around a specific domain is an
acceptable PASS: in such a case, keep looping on the remaining clock
domains, carrying on more tests, instead of bailing out with PASS.

Also check header consistency at first, like in other test cases.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>