Update gcloud sdk command to ai-platform (GoogleCloudPlatform#2360)

Update gcloud sdk command to ai-platform

Author: gogasca

notebooks/tutorials/cloud-ml-engine/Training and prediction with scikit-learn.ipynb

@@ -315,11 +315,11 @@
    "source": [
     "# Submit the training job\n",
     "\n",
-    "In this section, you use [`gcloud ml-engine jobs submit training`](https://cloud.google.com/sdk/gcloud/reference/ml-engine/jobs/submit/training) to submit your training job. The `--` argument passed to the command is a separator; anything after the separator will be passed to the Python code as input arguments.\n",
+    "In this section, you use [`gcloud ai-platform jobs submit training`](https://cloud.google.com/sdk/gcloud/reference/ai-platform/jobs/submit/training) to submit your training job. The `--` argument passed to the command is a separator; anything after the separator will be passed to the Python code as input arguments.\n",
     "\n",
     "For more information about the arguments preceeding the separator, run the following:\n",
     "\n",
-    "        gcloud ml-engine jobs submit training --help\n",
+    "        gcloud ai-platform jobs submit training --help\n",
     "\n",
     "The argument given to the python script is `--bucket-name`. The `--bucket-name` argument is used to specify the name of the bucket to save the model file."
    ]
@@ -347,7 +347,7 @@
    "outputs": [],
    "source": [
     "# Submit the training job:\n",
-    "!gcloud ml-engine jobs submit training $JOB_NAME \\\n",
+    "!gcloud ai-platform jobs submit training $JOB_NAME \\\n",
     "  --job-dir gs://$BUCKET_NAME/census_job_dir \\\n",
     "  --package-path ./census_training \\\n",
     "  --module-name census_training.train \\\n",
@@ -419,7 +419,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "!gcloud ml-engine models create $MODEL_NAME --regions us-central1"
+    "!gcloud ai-platform models create $MODEL_NAME --regions us-central1"
    ]
   },
   {
@@ -435,7 +435,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "!gcloud ml-engine versions create $VERSION_NAME \\\n",
+    "!gcloud ai-platform versions create $VERSION_NAME \\\n",
     "  --model=$MODEL_NAME \\\n",
     "  --framework=scikit-learn \\\n",
     "  --origin=gs://$BUCKET_NAME/ \\\n",
@@ -506,7 +506,7 @@
    },
    "outputs": [],
    "source": [
-    "!gcloud ml-engine predict --model $MODEL_NAME --version \\\n",
+    "!gcloud ai-platform predict --model $MODEL_NAME --version \\\n",
     "  $VERSION_NAME --json-instances $INPUT_FILE"
    ]
   },
@@ -533,10 +533,10 @@
    "outputs": [],
    "source": [
     "# Delete the model version\n",
-    "!gcloud ml-engine versions delete $VERSION_NAME --model=$MODEL_NAME --quiet\n",
+    "!gcloud ai-platform versions delete $VERSION_NAME --model=$MODEL_NAME --quiet\n",
     "\n",
     "# Delete the model\n",
-    "!gcloud ml-engine models delete $MODEL_NAME --quiet\n",
+    "!gcloud ai-platform models delete $MODEL_NAME --quiet\n",
     "\n",
     "# Delete the bucket and contents\n",
     "!gsutil rm -r gs://$BUCKET_NAME\n",