Add CSIT ARM64 templates

Add CSIT ARM64 templates

Add specific ARM64 CSIT job templates to avoid issues with
running the corresponding testplans. The plans are hardcoded
to be found under the {project-name} directory. This variable
for ARM is defined as {project-name}-arm64 which makes the dir
location invalid.

ARM64 needs to have its own templates in this case to avoid
modifying the current template to accept testcase-plans as a
parameter and having to define it in every exisiting CSIT job.

Change-Id: Ia7a6d63646800675ae7d2cd165a10c315d623903
Issue-ID: CIMAN-217
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>