[SSSD] [sssd PR#198][comment] secrets: support https in proxy provider

[pbrezina]

URL: https://github.com/SSSD/sssd/pull/198
Title: #198: secrets: support https in proxy provider

pbrezina commented:
"""
retest this please
"""

See the full comment at https://github.com/SSSD/sssd/pull/198#issuecomment-289439821