log username of retargeter

log username of retargeter

add hold notes

better notes for hold update

(cherry picked from commit 5672d9d70fd7122073f7bbf6ba7415339cf42d10)

json format in hold reset hold notes, added cancel cause & cancel note

added API call for create hold reset note, it is used within the hold targeter when not called against a specific hold. added a hold reset note for better hold overwriting old hold.