Description of problem:

The length APPLICATION_NAME is not validated in the UI. The creation produces some garbage, e.g image streams & deployment configurations.

Service name limit is at most 24 chars so we shall check the service name in the template 
Eg-https://github.com/openshift/training/blob/master/beta4/eap6-basic-sti.json#L117
"name": "${APPLICATION_NAME}-https-service",
Here we shall allow ${APPLICATION_NAME} to be of 10 chars only as already 
-https-service is of 14 chars.

From the command line you will get an error.

Failed to create eap6-basic-sti in project xyz-demo1-with-eap6 
Cannot create Service x2345678901-https-service. Service "x2345678901-https-service" is invalid: metadata.name: invalid value 'x2345678901-https-service': must be a DNS 952 label (at most 24 characters, matching regex [a-z]([-a-z0-9]*[a-z0-9])?): e.g. "my-name"

Version-Release number of selected component (if applicable):
3.0

How reproducible:
Always

Steps to Reproduce:
1.Give application name whose length is more than 10 chars
2. Use template https://github.com/openshift/training/blob/master/beta4/eap6-basic-sti.json
3. Create an app

Actual results:
Not giving recommendation for app name length or not validating app length

Expected results:
It shall give the recommendations for app name length or validate it

Additional info: