remove deprecated modules netflow, fb_apache and azure

docs/index.asciidoc

@@ -142,10 +142,6 @@ include::static/modules.asciidoc[]
 
 include::static/arcsight-module.asciidoc[]
 
-include::static/netflow-module.asciidoc[]
-
-include::static/azure-module.asciidoc[]
-
 // Working with Filebeat Modules
 include::static/filebeat-modules.asciidoc[]
 

docs/static/modules.asciidoc

@@ -7,8 +7,6 @@ visualizing it with purpose-built dashboards.
 These modules are available:
 
 * <<arcsight-module>>
-* <<netflow-module,Netflow Module (deprecated)>>
-* <<azure-module, Microsoft Azure Module (deprecated)>>
 
 Each module comes pre-packaged with Logstash configurations, Kibana dashboards,
 and other meta files that make it easier for you to set up the Elastic Stack for

modules/README.md

@@ -1,96 +1,2 @@
-# Module settings and structure
-
-## settings 
-
-### logstash.yml
-
-```
-modules:
-  - name: netflow
-  var.output.elasticsearch.host: "es.mycloud.com"
-  var.output.elasticsearch.user: "foo"
-  var.output.elasticsearch.password: "password"
-  var.input.tcp.port: 5606
-```
-
-### command-line
-
-```
-bin/logstash \
- --modules netflow \
- -M "netflow.var.output.elasticsearch.host=es.mycloud.com" \
- -M "netflow.var.output.elasticsearch.user=foo" \
- -M "netflow.var.output.elasticsearch.password=password" \
- -M "netflow.var.input.tcp.port=5606"
-```
-
-## Current Gem structure
-```
-GEM File structure
-logstash-module-netflow
-├── configuration
-│   ├── elasticsearch
-│   │   └── netflow.json
-│   ├── kibana
-│   │   ├── dashboard
-│   │   │   └── netflow.json (contains '["dash1", "dash2"]')
-│   │   │   └── dash1.json ("panelJSON" contains refs to visualization panels 1,2 and search 1)
-│   │   │   └── dash2.json ("panelJSON" contains refs to visualization panel 3  and search 2)
-│   │   ├── index-pattern
-|   |   |   └── netflow.json
-│   │   ├── search
-|   |   |   └── search1.json
-|   |   |   └── search2.json
-│   │   └── vizualization
-|   |   |   └── panel1.json
-|   |   |   └── panel2.json
-|   |   |   └── panel3.json
-│   └── logstash
-│       └── netflow.conf.erb
-├── lib
-│   └── logstash_registry.rb
-└── logstash-module-netflow.gemspec
-```
-## Proposed multi-version Gem structure
-```
-GEM File structure
-logstash-module-netflow
-├── configuration
-│   ├── elasticsearch
-│   │   └── netflow.json
-│   ├── kibana
-│   │   ├── dashboard
-│   │   │   └── netflow.json (contains '{"v5.5.0": ["dash1", "dash2"], "v6.0.4": ["dash1", "dash2"]')
-│   │   │   └── v5.5.0
-│   │   │   |   └── dash1.json ("panelJSON" contains refs to visualization panels 1,2 and search 1)
-│   │   │   |   └── dash2.json ("panelJSON" contains refs to visualization panel 3  and search 2)
-│   │   │   └── v6.0.4
-│   │   │       └── dash1.json ("panelJSON" contains refs to visualization panels 1,2 and search 1)
-│   │   │       └── dash2.json ("panelJSON" contains refs to visualization panel 3  and search 2)
-│   │   ├── index-pattern
-│   │   │   └── v5
-|   |   |   |   └── netflow.json
-│   │   │   └── v6
-|   |   |       └── netflow.json
-│   │   ├── search
-│   │   │   └── v5
-|   |   |   |   └── search1.json
-|   |   |   |   └── search2.json
-│   │   │   └── v6
-|   |   |       └── search1.json
-|   |   |       └── search2.json
-│   │   └── vizualization
-│   │   │   └── v5
-|   |   |   |   └── panel1.json
-|   |   |   |   └── panel2.json
-|   |   |   |   └── panel3.json
-│   │   │   └── v6
-|   |   |       └── panel1.json
-|   |   |       └── panel2.json
-|   |   |       └── panel3.json
-│   └── logstash
-│       └── netflow.conf.erb
-├── lib
-│   └── logstash_registry.rb
-└── logstash-module-netflow.gemspec
-```
+This file keeps `/modules` non empty for build.
+Keep the file until Arcsight module is removed.