lodgeit: switch pastes to be private by default

Change-Id: I8d40c74d9dbb4899d705de05baca3b7a082c4dcc
Depends-On: https://review.opendev.org/c/opendev/lodgeit/+/828201

testinfra/test_paste.py

@@ -31,6 +31,9 @@ def test_paste(host):
                    '--resolve paste.opendev.org:443:127.0.0.1 '
                    'https://paste.opendev.org')
     assert 'New Paste' in cmd.stdout
+    # ensure we paste private by default
+    assert '<input type="checkbox" name="private" id="private" checked>' \
+        in cmd.stdout
 
 def test_paste_redirects(host):
     # http site should redirect all agents but Pastebinit