-kkey of the secret variable
-vvalue of the secret variable
-pflag allows adding a variable on the project level.
cs secret:addonly with
cs secret:addcommand, specifying for which environment/or service we should apply it.
-e(environment) with value development, we override this value for each service in the development environment.
-sflag with service ID, let it be service A for example, and a new value of FOO variable is BAR3.