Replace writepid with task_profiles command for cgroup migration

writepid command usage to join a cgroup has been deprecated in favor
of a more flexible approach using task_profiles. This way cgroup path
is not hardcoded and cgroup changes can be easily made. Replace
writepid with task_profiles command to migrate between cgroups.

Bug: 191283136
Test: build and boot
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Change-Id: Ib242aba3f59c412aaea1f2e7f65a5c500e14dfd9

service/android.hardware.media.c2@1.0-service-v4l2-32.rc

@@ -3,5 +3,5 @@ service android-hardware-media-c2-v4l2-hal-1-0 /vendor/bin/hw/android.hardware.m
     user media
     group mediadrm drmrpc
     ioprio rt 4
-    writepid /dev/cpuset/foreground/tasks
+    task_profiles ProcessCapacityHigh
     setenv MESA_GLSL_CACHE_DISABLE 1

service/android.hardware.media.c2@1.0-service-v4l2-64.rc

@@ -3,5 +3,5 @@ service android-hardware-media-c2-v4l2-hal-1-0 /vendor/bin/hw/android.hardware.m
     user media
     group mediadrm drmrpc
     ioprio rt 4
-    writepid /dev/cpuset/foreground/tasks
+    task_profiles ProcessCapacityHigh
     setenv MESA_GLSL_CACHE_DISABLE 1