for auth_hrn in my_auths:
hrn_credentials.append ( (auth_hrn, 'auth', self.authority_credential_string(auth_hrn),) )
for slice_hrn in my_slices:
for auth_hrn in my_auths:
hrn_credentials.append ( (auth_hrn, 'auth', self.authority_credential_string(auth_hrn),) )
for slice_hrn in my_slices: