add page flags for staking validators (#8103)

* add page flags for staking validators

* add test

* fix test

* add build flag

Co-authored-by: aleem1413 <aleem@vitwit.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

x/staking/client/cli/cli_test.go

@@ -256,7 +256,10 @@ func (s *IntegrationTestSuite) TestGetCmdQueryValidators() {
 	}{
 		{
 			"one validator case",
-			[]string{fmt.Sprintf("--%s=json", tmcli.OutputFlag)},
+			[]string{
+				fmt.Sprintf("--%s=json", tmcli.OutputFlag),
+				fmt.Sprintf("--%s=1", flags.FlagLimit),
+			},
 			1,
 		},
 		{
@@ -278,7 +281,7 @@ func (s *IntegrationTestSuite) TestGetCmdQueryValidators() {
 
 			var result types.QueryValidatorsResponse
 			s.Require().NoError(clientCtx.JSONMarshaler.UnmarshalJSON(out.Bytes(), &result))
-			s.Require().Equal(len(s.network.Validators), len(result.Validators))
+			s.Require().Equal(tc.minValidatorCount, len(result.Validators))
 		})
 	}
 }

x/staking/client/cli/query.go

@@ -132,6 +132,7 @@ $ %s query staking validators
 	}
 
 	flags.AddQueryFlagsToCmd(cmd)
+	flags.AddPaginationFlagsToCmd(cmd, "validators")
 
 	return cmd
 }