7726093 autofs: convert code to cache_req

Authored and Committed by pbrezina 4 years ago
    autofs: convert code to cache_req
    
    This will simplify the code a lot so it can be further extended.
    At this point the conversion is done 1:1, we will do additional
    changes in next patches.
    
    Resolves:
    https://pagure.io/SSSD/sssd/issue/2607
    
    Reviewed-by: Tomáš Halman <thalman@redhat.com>