Fix sanity issues. (#4346) (#4358)

(cherry picked from commit ca2c64b5ca)

plugins/lookup/consul_kv.py

@@ -20,6 +20,7 @@ DOCUMENTATION = '''
       _raw:
         description: List of key(s) to retrieve.
         type: list
+        elements: string
       recurse:
         type: boolean
         description: If true, will retrieve all the values that have the given key as prefix.

plugins/lookup/credstash.py

@@ -17,11 +17,11 @@ DOCUMENTATION = '''
       _terms:
         description: term or list of terms to lookup in the credit store
         type: list
-        required: True
+        elements: string
+        required: true
       table:
         description: name of the credstash table to query
         default: 'credential-store'
-        required: True
       version:
         description: Credstash version
       region:

plugins/lookup/dnstxt.py

@@ -18,6 +18,7 @@ DOCUMENTATION = '''
         description: domain or list of domains to query TXT records from
         required: True
         type: list
+        elements: string
 '''
 
 EXAMPLES = """