Type options of lookup plugins (#8626)

Type options of lookup plugins.

plugins/lookup/dsv.py

@@ -22,6 +22,7 @@ options:
         required: true
     tenant:
         description: The first format parameter in the default O(url_template).
+        type: string
         env:
             - name: DSV_TENANT
         ini:
@@ -32,6 +33,7 @@ options:
         default: com
         description: The top-level domain of the tenant; the second format
             parameter in the default O(url_template).
+        type: string
         env:
             - name: DSV_TLD
         ini:
@@ -40,6 +42,7 @@ options:
         required: false
     client_id:
         description: The client_id with which to request the Access Grant.
+        type: string
         env:
             - name: DSV_CLIENT_ID
         ini:
@@ -48,6 +51,7 @@ options:
         required: true
     client_secret:
         description: The client secret associated with the specific O(client_id).
+        type: string
         env:
             - name: DSV_CLIENT_SECRET
         ini:
@@ -58,6 +62,7 @@ options:
         default: https://{}.secretsvaultcloud.{}/v1
         description: The path to prepend to the base URL to form a valid REST
             API request.
+        type: string
         env:
             - name: DSV_URL_TEMPLATE
         ini: