- implements GH #2895

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#### Type Of Change - [ ] Small bug fix (non-breaking change which fixes an issue) - [x] New feature (non-breaking change which adds new functionality) - [ ] Breaking change (fix or feature that would change existing functionality)

#### Checklist: <!-- Go over all points below, and after creating the PR, tick the checkboxes that apply --> - [ ] PR should be backported to stable branches - [x] Tested changes locally - [x] Related to issue #2895

#### Description Allows adding additional AMQP-headers in the format header1=value1;header2=value2;...

Remark: I decided to re-use the definition `{"kazoo_publish", (cmd_function) kz_amqp_publish_ex, 4, fixup_kz_amqp, fixup_kz_amqp_free, ANY_ROUTE},` resp. to modify the existing method signature `int kz_amqp_publish_ex(struct sip_msg* msg, char* exchange, char* routing_key, char* payload, char* _pub_flags)` to `int kz_amqp_publish_ex(struct sip_msg* msg, char* exchange, char* routing_key, char* payload, char* _pub_flags)` as the param _pub_flags is neither described in the docs, nor it was evaluated/used, and thus was useless anyhow. You can view, comment on, or merge this pull request online at:

https://github.com/kamailio/kamailio/pull/2925

-- Commit Summary --

* <a href="https://github.com/kamailio/kamailio/pull/2925/commits/0aee8fc2c486f19a20c936a5098dab2d1d33f829">kazoo: Allow optional AMQP-headers in kazoo_query and kazoo_publish</a>

-- File Changes --

M src/modules/kazoo/doc/kazoo_admin.xml (8) M src/modules/kazoo/kazoo.c (1) M src/modules/kazoo/kz_amqp.c (117) M src/modules/kazoo/kz_amqp.h (11)

-- Patch Links --

https://github.com/kamailio/kamailio/pull/2925.patch https://github.com/kamailio/kamailio/pull/2925.diff