astobj2: Add tag variants for ao2_bump, ao2_cleanup, and ao2_replace

Tags are useful in hunting down ref imbalances; this patch adds tag variants
for these commonly used macros/functions.

Review: https://reviewboard.asterisk.org/r/3750/


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@418419 f38db490-d61c-443f-a65b-d21fe96a405b