Coverity: move coverity token outside of CI repo

Currently the authentication token for Coverity servers
is only used by Arm servers, therefore move it to Arm internal location.
The new location is /arm/projectscratch/ssg/trusted-fw/ci-files/coverity

Change-Id: I70ff7ea9567f284eb593d4d45106c2ffe07e053b
Signed-off-by: Zelalem <zelalem.aweke@arm.com>
1 file changed