Generate stronger password for LOHS

Increase password entropy for LOHS to 2^75 (used to be 2^48). The
password length is increased to 15 chars from range a-z, 0-9 (minus symbols
that may look confusing on the screen).

Bug: 142068677
Bug: 134763824

Test: atest com.android.server.wifi
Change-Id: Ibf7299a7a724a24f960ab0a53ce321f620d875c0
2 files changed
tree: 7339064bfc4e9e90034d746adeb88d289f290bab
  1. service/
  2. PREUPLOAD.cfg