Update usage of beats-input obsoleted SSL params in the core. (#16753)

docs/static/ls-ls-lumberjack.asciidoc

@@ -73,7 +73,7 @@ Start the downstream instance of Logstash:
 
 [source,shell]
 ----
-bin/logstash -e 'input { beats { codec => json port => 5000 ssl => true ssl_certificate => "lumberjack.cert" ssl_key => "lumberjack.key"} }'
+bin/logstash -e 'input { beats { codec => json port => 5000 ssl_enabled => true ssl_certificate => "lumberjack.cert" ssl_key => "lumberjack.key"} }'
 ----
 
 This sample command sets port 5000 to listen for incoming Beats input.

docsk8s/quick-start/sample-configuration-files.asciidoc

@@ -41,11 +41,11 @@ data:
     input {
       beats {
         port => "5044"
-        ssl => true
+        ssl_enabled => true
         ssl_certificate_authorities => ["/usr/share/logstash/config/ca.crt"]
         ssl_certificate => "/usr/share/logstash/config/server.crt"
         ssl_key => "/usr/share/logstash/config/server.pkcs8.key"
-        ssl_verify_mode => "force_peer"
+        ssl_client_authentication => "required"
       }
     }
     output {

docsk8s/setting-up/ls-k8s-secure.asciidoc

@@ -28,11 +28,11 @@ On {ls}, configure the server certificates to the pipeline:
 input {
     beats {
         port => "5044"
-        ssl => true
+        ssl_enabled => true
         ssl_certificate_authorities => ["/usr/share/logstash/config/ca.crt"]
         ssl_certificate => "/usr/share/logstash/config/server.crt"
         ssl_key => "/usr/share/logstash/config/server.pkcs8.key"
-        ssl_verify_mode => "force_peer"
+        ssl_client_authentication => "required"
     }
 }
 --

qa/integration/fixtures/beats_input_spec.yml

@@ -13,7 +13,7 @@ config:
   tls_server_auth: |-
     input {
       beats {
-        ssl => true
+        ssl_enabled => true
         port => 5044
         ssl_certificate => '<%=options[:ssl_certificate]%>'
         ssl_key => '<%=options[:ssl_key]%>'
@@ -23,11 +23,11 @@ config:
   tls_mutual_auth: |-
     input {
       beats {
-        ssl => true
+        ssl_enabled => true
         port => 5044
         ssl_certificate => '<%=options[:ssl_certificate]%>'
         ssl_key => '<%=options[:ssl_key]%>'
-        ssl_verify_mode => "force_peer"
+        ssl_client_authentication => "required"
         ssl_certificate_authorities => '<%=options[:ssl_certificate]%>'
       }
     }