Add poolsize warning for environment create/update CLI (#1837)

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>

Co-authored-by: Sanket Sudake <sanketsudake@gmail.com>

pkg/fission-cli/cmd/environment/update.go

@@ -29,6 +29,7 @@ import (
 	fv1 "github.com/fission/fission/pkg/apis/core/v1"
 	"github.com/fission/fission/pkg/fission-cli/cliwrapper/cli"
 	"github.com/fission/fission/pkg/fission-cli/cmd"
+	"github.com/fission/fission/pkg/fission-cli/console"
 	flagkey "github.com/fission/fission/pkg/fission-cli/flag/key"
 	"github.com/fission/fission/pkg/utils"
 )
@@ -103,6 +104,9 @@ func updateExistingEnvironmentWithCmd(env *fv1.Environment, input cli.Input) (*f
 
 	if input.IsSet(flagkey.EnvPoolsize) {
 		env.Spec.Poolsize = input.Int(flagkey.EnvPoolsize)
+		if env.Spec.Poolsize < 1 {
+			console.Warn("poolsize is not positive, if you are using pool manager please set postive value")
+		}
 	}
 
 	if input.IsSet(flagkey.EnvGracePeriod) {