Description of problem:
When create storage from web console, in the size box, input decimal, eg, 1.2, the colour of box will turn red, and create button is disabled. However CLI could create with decimal values.

Version-Release number of selected component (if applicable):
v3.7.0-0.125.0

How reproducible:
always

Steps to Reproduce:
1.Login in web console, on create storage page, in put name, input 1.2 in size box, try to create storage.
2.In client ,create pvc with decimal in size.
$ oc create -f pvc-one.json 
persistentvolumeclaim "myclaim-one" created

$cat pvc-one.json
{
    "apiVersion": "v1",
    "kind": "PersistentVolumeClaim",
    "metadata": {
        "name": "myclaim-one"
    },
    "spec": {
        "accessModes": [ "ReadWriteOnce" ],
        "resources": {
            "requests": {
                "storage": "1.2Gi"
            }
        }
    }
}

3.

Actual results:
1. Create button is disabled, and no error info showing.
2. Storage is created successfully.

Expected results:
1.Should keep consistent with client when create storage. If plan to forbid decimal, error info should display.

Additional info: