Update language to comply with Android's inclusive language guidance

1. Rename isClientInWhitelist to isClientInAllowlist

See https://source.android.com/setup/contribute/respectful-code for
reference

Bug: 162536543
Test: Build & run
Change-Id: If9c5a2599e13633d6e99993d857e2101b4e6e4ec
Merged-In: Ibbd97bf31915d59b5110cbcc8f2126f7a7221060
Merged-In: I915e09e4e64d5c268630cec2d0ef05ea0592fd6f
Merged-In: I499c4574464862f3a1dcea2c6d51813e23ba4b82