Multiple underscores are not normalized for pypi ecosystem packages

[tisnik]

If the following job description is sent to the flow-scheduling endpoint:

{
  "flow_arguments": [
    {
      "ecosystem": "pypi",
      "force": true,
      "force_graph_sync": true,
      "name": "clojure__py",
      "recursive_limit": 0,
      "version": "0.2.4"
    }
  ],
  "flow_name": "bayesianFlow"
}

The new S3 entry is created:

Amazon S3STAGE-bayesian-core-data/pypi/clojure__py

But pip itself seems to normalize double underscore for the entry clojure__py==0.2.4:

pip install -v -r requirements.txt  |grep clojure_
Collecting clojure__py==0.2.4 (from -r requirements.txt (line 8))
    Found link https://pypi.python.org/packages/04/ac/6abc31d1e462265721c1a7ee3edc0f268bae80b0af54a7291ea5ed1e0ac0/clojure_py-0.2.2.tar.gz#md5=e61d6ef5457667b96bc77ce643c4558e (from https://pypi.python.org/simple/clojure-py/), version: 0.2.2
    Found link https://pypi.python.org/packages/0a/03/4eb296be06ffecff2202a85e5e41a1263bc2a158698b32f6731264db195a/clojure_py-0.2.0.tar.gz#md5=3cde39ad9a550b49ffb6f65de1c07ae8 (from https://pypi.python.org/simple/clojure-py/), version: 0.2.0
    Found link https://pypi.python.org/packages/51/18/1cc7924585c6169529ac4ebdb375b64fd6c0544024b9178d3b83b7f1cef8/clojure_py-0.2.3.tar.gz#md5=8a81a26d34e12a2bb69762c5147fd79f (from https://pypi.python.org/simple/clojure-py/), version: 0.2.3
    Skipping link https://pypi.python.org/packages/9f/34/a0c981f51871b04baf9273365fa681a90be17adf428f0605693f9b255dea/clojure_py-0.1.0g.win32.exe#md5=d9d6a56b114bd2a3b60477d79a7a8283 (from https://pypi.python.org/simple/clojure-py/); unsupported archive format: .exe
    Found link https://pypi.python.org/packages/e9/d1/77ca45d549ee5879c615eb4431db4c94b4c90cb2be6705d652efcc08e02e/clojure_py-0.2.4.tar.gz#md5=db0025db3e80fae44f20efba1bab6e3c (from https://pypi.python.org/simple/clojure-py/), version: 0.2.4
    Found link https://pypi.python.org/packages/ec/80/4990cf067a7a5cc3800a1e2331ab97c17583b78b91645bfcce61bc50df6b/clojure_py-0.1.0g.zip#md5=2dad75fc34ad2b1f4edb3ce9e831dc27 (from https://pypi.python.org/simple/clojure-py/), version: 0.1.0g
    Found link https://pypi.python.org/packages/fc/59/979c5b14f0ac051d2c9d39fdce3d851977ed9f78447bbc03392a991ad4d4/clojure_py-0.2.1.tar.gz#md5=8a4a8f7ea9cc4af8eed298e704b9a2bf (from https://pypi.python.org/simple/clojure-py/), version: 0.2.1
  Looking up "https://pypi.python.org/packages/e9/d1/77ca45d549ee5879c615eb4431db4c94b4c90cb2be6705d652efcc08e02e/clojure_py-0.2.4.tar.gz" in the cache
  Using cached clojure_py-0.2.4.tar.gz