make pagination a toggle (#622)

dcos/data/config-schema/core.json

@@ -37,6 +37,12 @@
             "default": "false",
             "title": "SSL Verification",
             "description": "Whether to verify SSL certs for HTTPS or path to certs"
+        },
+        "pagination": {
+            "type": "boolean",
+            "default": true,
+            "title": "Pagination",
+            "description": "Whether to paginate output"
         }
     },
     "type": "object"

dcos/emitting.py

@@ -172,7 +172,8 @@ def _page(output, pager_command=None):
     num_lines = output.count('\n')
     exceeds_tty_height = pager.getheight() - 1 < num_lines
 
-    if exceeds_tty_height:
+    paginate = util.get_config().get("core.pagination", True)
+    if exceeds_tty_height and paginate:
         pydoc.pipepager(output, cmd=pager_command)
     else:
         print(output)