Overlord: Support POP v9 and its finishRockHeaderUpdating command

[eduard-bagdasaryan]

No description provided.

[eduard-bagdasaryan]

Done at 8572e01.

[rousskov]

Alex: I hope \b part of the regex will be relayed correctly,

Eduard: This causes a typeError:

TypeError [ERR_INVALID_CHAR]: Invalid character in header content ["Overlord-job.type"]
    at ClientRequest.setHeader (_http_outgoing.js:488:3)
    at new ClientRequest (_http_client.js:221:14)
    at Proxy.request (http.js:44:10)
    at Proxy.js:552:34

Let's try to add reliable support for passing regexes to DUT overlord:

1. Rename Overlord-job.type option to Overlord-job-type-regex

2. Adjust ProxyOverlord::_remoteCall() to handle options with names ending with -regex specially:

• Validate that the passed value is a regex from Javascript point of view. If we can demand RegExp objects as values, we should!
• Encode values using the simplest standard HTTP-safe and, ideally, human-reader-friendly encoding you can find; we must preserve things like backslashes, commas, and spaces (all are HTTP-unsafe). The encoding should be "natively" supported by Javascript and Perl -- we do not want to add packages/dependencies OR implement decoders/encoders.

3. Adjust the Perl script in a similar fashion:

• decode -regex values
• validate that each decoded value is a regex from Perl point of view

[eduard-bagdasaryan]

Done (up to 13bf63d).