Add libprocessgroup dependency

Because set_sched_policy is moved into libprocessgroup an additional
dependency is requred for recovery_component_test to build.

Exempt-From-Owner-Approval: janitorial

Bug: 111307099
Test: builds, boots

Merged-In: I7cf75e473ee1e2837940606c71d15be26db0c3f2
Change-Id: I7cf75e473ee1e2837940606c71d15be26db0c3f2
Signed-off-by: Suren Baghdasaryan <surenb@google.com>