COMPMID-1504: (Nightly) Segfaults on CL and android

Keeps a copy of context in Scheduler to avoid releasing KernelLibrary
resources before Scheduler resourses leading to a segfault.
Does not exactly revert COMPMID-1122 as it still tries to keep context
in sync.

Change-Id: I3deb6bc1725b80f65f51ebd34d536f612ef6dd86
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/144024
Reviewed-by: Michele DiGiorgio <michele.digiorgio@arm.com>
Tested-by: Jenkins <bsgcomp@arm.com>
2 files changed