Divide dumpsys services into different buckets

cpuinfo dumps all on dumpCritical
meminfo dumps all dumpNormal (temp)
activity dumps activities on dumpCritical, dumps all on normal
window dumps all on dumpCritical

BUG: 31774394

Test: adb bugreport > /tmp/bugreport.zip
Test: frameworks/base/services/tests/runtests.py -e class
"com.android.server.utils.PriorityDumpTest"

Change-Id: I529a709ec8654d314515ebd559894b4eacdc8968