[Asterisk-code-review] func_json: Enhance parsing capabilities of JSON_DECODE (asterisk[master])

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Hello Kevin Harwell, Friendly Automation, 

I'd like you to reexamine a change. Please visit

    https://gerrit.asterisk.org/c/asterisk/+/18012

to look at the new patch set (#8).

Change subject: func_json: Enhance parsing capabilities of JSON_DECODE
......................................................................

func_json: Enhance parsing capabilities of JSON_DECODE

Adds support for arrays to JSON_DECODE by allowing the
user to print out entire arrays or index a particular
key or print the number of keys in a JSON array.

Additionally, adds support for recursively iterating a
JSON tree in a single function call, making it easier
to parse JSON results with multiple levels. A maximum
depth is imposed to prevent potentially blowing
the stack.

Also fixes a bug with the unit tests causing an empty
string to be printed instead of the actual test result.

ASTERISK-29913 #close

Change-Id: I603940b216a3911b498fc6583b18934011ef5d5b
---
A doc/CHANGES-staging/func_json_additions.txt
M funcs/func_json.c
2 files changed, 250 insertions(+), 45 deletions(-)


  git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/12/18012/8
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Gerrit-Project: asterisk
Gerrit-Branch: master
Gerrit-Change-Id: I603940b216a3911b498fc6583b18934011ef5d5b
Gerrit-Change-Number: 18012
Gerrit-PatchSet: 8
Gerrit-Owner: N A <asterisk at phreaknet.org>
Gerrit-Reviewer: Friendly Automation
Gerrit-Reviewer: Kevin Harwell <default.enum at gmail.com>
Gerrit-CC: Joshua Colp <jcolp at sangoma.com>
Gerrit-Attention: Joshua Colp <jcolp at sangoma.com>
Gerrit-Attention: Kevin Harwell <default.enum at gmail.com>
Gerrit-MessageType: newpatchset
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