3.0 configuration: update master-master sample

Author: andreyaksenov

doc/code_snippets/snippets/replication/instances.enabled/master_master/config.yaml

@@ -26,8 +26,7 @@ groups:
               mode: rw
             iproto:
               listen: 127.0.0.1:3302
-          instance003:
-            database:
-              mode: rw
-            iproto:
-              listen: 127.0.0.1:3303
+
+# Load sample data
+app:
+  file: 'myapp.lua'

doc/code_snippets/snippets/replication/instances.enabled/master_master/instances.yml

@@ -1,3 +1,2 @@
 instance001:
-instance002:
-instance003:
+instance002:

doc/code_snippets/snippets/replication/instances.enabled/master_master/myapp.lua

@@ -0,0 +1,22 @@
+function create_space()
+    box.schema.space.create('bands')
+    box.space.bands:format({
+        { name = 'id', type = 'unsigned' },
+        { name = 'band_name', type = 'string' },
+        { name = 'year', type = 'unsigned' }
+    })
+    box.space.bands:create_index('primary', { parts = { 'id' } })
+end
+
+function load_data()
+    box.space.bands:insert { 1, 'Roxette', 1986 }
+    box.space.bands:insert { 2, 'Scorpions', 1965 }
+    box.space.bands:insert { 3, 'Ace of Base', 1987 }
+    box.space.bands:insert { 4, 'The Beatles', 1960 }
+    box.space.bands:insert { 5, 'Pink Floyd', 1965 }
+    box.space.bands:insert { 6, 'The Rolling Stones', 1962 }
+    box.space.bands:insert { 7, 'The Doors', 1965 }
+    box.space.bands:insert { 8, 'Nirvana', 1987 }
+    box.space.bands:insert { 9, 'Led Zeppelin', 1968 }
+    box.space.bands:insert { 10, 'Queen', 1970 }
+end