finance/py-stripe: Update to 1.25.0

• Update to 1.25.0
• Switch to CHEESEHOP for distribution files (Geo-aware CDN)
• Canonicalize COMMENT (According to setup.py:description=)
• Switch to requests (2.x)
• Add TESTS option
• Update TEST_DEPENDS values and assignment
• Replace post-patch with a patch, submitted upstream [1]
• Use PYDISTUTILS_SETUP to ensure its setuptools wrapped
• Run pycurl tests that are disabled by default with this weird reverse logic bit of code, issue created upstream [2]
  
  if not os.environ.get('SKIP_PYCURL_TESTS'): self.skipTest('Pycurl skipped as SKIP_PYCURL_TESTS is set'

[1] https://github.com/stripe/stripe-python/pull/170
[2] https://github.com/stripe/stripe-python/issues/172

QA: Ran 195 tests in 44.446s OK (skipped=9)