LU-8056 build: announce linux kernel 4.5.7 support

LU-8056 build: announce linux kernel 4.5.7 support

Bump kernel version in ChangeLog to latest supported
kernel which is 4.5.7

Test-Parameters: trivial

Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Change-Id: I9607aa68e67174e588b284d4e3048131e2dcc2bd
Reviewed-on: http://review.whamcloud.com/21970
Reviewed-by: Jian Yu <jian.yu@intel.com>
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>