Update AMO event to match new logging statement

[diox]

Some time ago we (AMO engineers) accidentally removed a log statement foxsec-pipeline was using when an user logged in from FxA. I'm going to add it back in https://github.com/mozilla/addons-server/pull/16377/files, with a reworded string to make it more explicit, and only the minimal info needed.

foxsec-pipeline needs to be updated for the new string. Specifically, this:

foxsec-pipeline/src/main/java/com/mozilla/secops/parser/AmoDocker.java

Line 17 in af86e37

private final String reGotProfile = "^Got profile.*'email': ?'([^']+)'.*";

Needs to change to match this:
Logging in FxA user %s where %s is the email.

[kkleemola]

Updated. Thanks!