change-policy

change-policy [-dry-run] -params [name=value]* 

Modifies store-wide policy parameters to services you have not yet deployed. Specify the parameters to change after the -params flag, separating each parameter with a space character.

To specify parameter values that include embedded spaces, use quotation marks (") around the value, like this:
name="value with spaces"
If you use -dry-run, the command returns the parameters you specify without changing them.

For more information on setting policy parameters, see Setting Store Wide Policy Parameters.