Add set_target_stakes_per_interval extrinsic #482
Description
Is your feature request related to a problem? Please describe.
During the e2e test development, there is no such extrinsic to update the parameter. can't send stake related extrinsic in a short interval.
Describe the solution you'd like
Add the sudo_set_target_stakes_per_interval extrinsic in admin util pallet.
Describe alternatives you've considered
No response
Additional context
No response