[Asterisk-code-review] res_pjsip_outbound_registration: Make max random delay configurable. (asterisk[master])

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Hello Joshua Colp, Friendly Automation, 

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

    https://gerrit.asterisk.org/c/asterisk/+/18195

to look at the new patch set (#5).

Change subject: res_pjsip_outbound_registration: Make max random delay configurable.
......................................................................

res_pjsip_outbound_registration: Make max random delay configurable.

Currently, PJSIP will randomly wait up to 10 seconds for each
outbound registration's initial attempt. The reason for this
is to avoid having all outbound registrations attempt to register
simultaneously.

This can create limitations with the test suite where we need to
be able to receive inbound calls potentially within 10 seconds of
starting up. For instance, we might register to another server
and then try to receive a call through the registration, but if
the registration hasn't happened yet, this will fail, and hence
this inconsistent behavior can cause tests to fail. Ultimately,
this requires a smaller random value because there may be no good
reason to wait for up to 10 seconds in these circumstances.

To address this, a new config option is introduced which makes this
maximum delay configurable. This allows, for instance, this to be
set to a very small value in test systems to ensure that registrations
happen immediately without an unnecessary delay, and can be used more
generally to control how "tight" the initial outbound registrations
are.

ASTERISK-29965 #close

Change-Id: Iab989a8e94323e645f3a21cbb6082287c7b2f3fd
---
M configs/samples/pjsip.conf.sample
A contrib/ast-db-manage/config/versions/18e0805d367f_max_random_initial_delay.py
M res/res_pjsip_outbound_registration.c
3 files changed, 42 insertions(+), 1 deletion(-)


  git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/95/18195/5
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Gerrit-Project: asterisk
Gerrit-Branch: master
Gerrit-Change-Id: Iab989a8e94323e645f3a21cbb6082287c7b2f3fd
Gerrit-Change-Number: 18195
Gerrit-PatchSet: 5
Gerrit-Owner: N A <mail at interlinked.x10host.com>
Gerrit-Reviewer: Friendly Automation
Gerrit-Reviewer: Joshua Colp <jcolp at sangoma.com>
Gerrit-Attention: N A <mail at interlinked.x10host.com>
Gerrit-MessageType: newpatchset
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