postgresql_publication: add trust_input and session_role parameters (#279)

* postgresql_publication: add trust_input and session_role parameters

* add changelog fragment

tests/integration/targets/postgresql_publication/tasks/postgresql_publication_initial.yml

@@ -8,6 +8,7 @@
     test_table3: acme3
     test_pub: acme_publ
     test_role: alice
+    dangerous_name: 'curious.anonymous"; SELECT * FROM information_schema.tables; --'
     test_schema: acme_schema
     test_db: acme_db
     task_parameters: &task_parameters
@@ -178,6 +179,7 @@
       tables:
       - '{{ test_table1 }}'
       - '{{ test_schema }}.{{ test_table2 }}'
+      trust_input: yes
       parameters:
         publish: 'insert'
 
@@ -225,6 +227,22 @@
       that:
       - result.rowcount == 1
 
+  # Test
+  - name: postgresql_publication - test trust_input parameter
+    <<: *task_parameters
+    postgresql_publication: 
+      <<: *pg_parameters
+      name: '{{ test_pub }}'
+      session_role: '{{ dangerous_name }}'
+      owner: '{{ dangerous_name }}'
+      trust_input: no
+    ignore_errors: yes
+
+  - assert:
+      that:
+      - result is failed
+      - result.msg is search('is potentially dangerous')
+
   # Test
   - name: postgresql_publication - add table to publication, change owner, check_mode
     <<: *task_parameters