BUG: Plex plugin schema validation fails #1713

Expected behaviour:

Plex plugin config validation should be valid if a username/password is provided OR if a token is provided. ( merged with #1607 )

Actual behaviour:

The test always fails.

Steps to reproduce:

• Step 1: Set up the plex plugin with a username/password or a token.
• Step 2: bin/flexget check

Config:

configure_series:
  from:
    plex:
      section: 4
        token: xxxxx

Log:

2017-02-28 15:48 VERBOSE  check                         Pre-checked 33 configuration lines
2017-02-28 15:48 CRITICAL manager                       [/templates/tv/configure_series/from/plex] Cannot specify `username` and `password` with `token`
2017-02-28 15:48 CRITICAL manager                       Failed to load config file: Did not pass schema validation.
Could not start manager: Did not pass schema validation.

Additional information:

• Flexget Version: 2.10.10.dev
• Python Version: 3.6.0
• Installation method: pip
• OS and version: OSX 10.12.3

Solution:

username, password and token schemas are defaulted to an empty string; remove that and it works.

Cheers.