Move getCachingPolicyOptions method present in existing
cache_policy_dg2_and_later.inl in new
get_caching_policy_options.inl file.
This would help in reusing getCachingPolicyOptions
method in any newly created cache_policy_* file.
Related-To: NEO-8306
Signed-off-by: Jitendra Sharma <jitendra.sharma@intel.com>