v1.24.3: Deployment schema validation supporting Edge Runtime 1.2 (#586)
* Remove schema-template from template as it is not used * Add deployment.template.json validation against EA 1.1 and EH 1.2 * Add deployment.template.json validation against EA 1.1 and EH 1.2 * Add support for 1.2 schema update when selecting default Edge Runtime version * Point to schemastore deployment template instead of local to solution * Fix lint issue * Address PR feedback