Move odexes of non-system apps into system_other

Previously, the patterns in SYSTEM_OTHER_ODEX_FILTER only matched
subpaths of /system. Broaden this to match /<p> as well as /system/<p>.

Because SYSTEM_OTHER_ODEX_FILTER includes system_ext and product apps,
the immediate effect of this is that the odex and vdex files of
apps on those partitions move to system_other for A/B devices.

This makes the product and system_ext partitions smaller, which
in turn makes OTAs smaller.

Bug: 141707536
Test: soong unit tests
Test: (adb shell dumpsys package com.android.stk &&
       adb shell dumpsys package com.android.quicksearchbox) | grep -i dexopt -A3;
      verify dexpreopt state is 'prebuilt' for both
Test: adb shell find /data/dalvik-cache -name '*QuickSearch*.vdex' | wc -l == 1
Test: adb shell find /data/dalvik-cache -name '*Stk*.vdex' | wc -l == 1

Change-Id: I6e1e6d89c5822d48b522e7e6d77a363ed9f0e05b