quick fix http error (#1896)

src/nni_manager/training_service/pai/paiK8S/paiK8STrainingService.ts

@@ -62,13 +62,13 @@ class PAIK8STrainingService extends PAITrainingService {
             case TrialConfigMetadataKey.PAI_CLUSTER_CONFIG:
                 this.paiJobRestServer = new PAIJobRestServer(component.get(PAIK8STrainingService));
                 this.paiClusterConfig = <PAIClusterConfig>JSON.parse(value);
+                this.paiClusterConfig.host = this.formatPAIHost(this.paiClusterConfig.host);
                 if(this.paiClusterConfig.passWord) {
                     // Get PAI authentication token
                     await this.updatePaiToken();
                 } else if(this.paiClusterConfig.token) {
                     this.paiToken = this.paiClusterConfig.token;
                 }
-                this.paiClusterConfig.host = this.formatPAIHost(this.paiClusterConfig.host);
                 break;
 
             case TrialConfigMetadataKey.TRIAL_CONFIG:

src/nni_manager/training_service/pai/paiYarn/paiYarnTrainingService.ts

@@ -99,6 +99,7 @@ class PAIYarnTrainingService extends PAITrainingService {
                     path: '/webhdfs/api/v1',
                     host: this.paiClusterConfig.host
                 });
+                this.paiClusterConfig.host = this.formatPAIHost(this.paiClusterConfig.host);
                 if(this.paiClusterConfig.passWord) {
                     // Get PAI authentication token
                     await this.updatePaiToken();
@@ -107,7 +108,6 @@ class PAIYarnTrainingService extends PAITrainingService {
                 } else {
                     throw new Error('pai cluster config format error, please set password or token!');
                 }
-                this.paiClusterConfig.host = this.formatPAIHost(this.paiClusterConfig.host);
                 break;
 
             case TrialConfigMetadataKey.TRIAL_CONFIG: