SAML common: make attribute maps optional for providers
SAML common: make attribute maps optional for providers

adieu/authentic2,incuna/authentic,BryceLohr/authentic,incuna/authentic,BryceLohr/authentic,BryceLohr/authentic,pu239ppy/authentic2,incuna/authentic,pu239ppy/authentic2,pu239ppy/authentic2,incuna/authentic,adieu/authentic2,adieu/authentic2,incuna/authentic,adieu/authentic2,BryceLohr/authentic,pu239ppy/authentic2