Replace LC_CTYPE with LC_ALL (#1474)

Additionally allows generating a password on current gen Macbook.

Before:
LC_CTYPE=C tr -c -d '0123456789abcdefghijklmnopqrstuvwxyz' </dev/urandom | dd bs=32 count=1 2>/dev/null;echo
tr: Illegal byte sequence

After:
LC_ALL=C tr -c -d '0123456789abcdefghijklmnopqrstuvwxyz' </dev/urandom | dd bs=32 count=1 2>/dev/null;echo
nhq2bu42k0iox5svm9rnmmon3oc2i55g