Issue #3262802 by sekinet, yas: Remove tmp directory name in K8s launch template form

...in/cloud/launch_template/AwsCloudLaunchTemplatePlugin.php

modules/cloud_service_providers/k8s/k8s.module

...ugin/Validation/Constraint/YamlUrlConstraintValidator.php

...in/cloud/launch_template/K8sCloudLaunchTemplatePlugin.php

...n/cloud/launch_template/OpenStackLaunchTemplatePlugin.php

...cloud/launch_template/VmwareCloudLaunchTemplatePlugin.php

...ud/launch_template/CloudLaunchTemplatePluginInterface.php

...loud/launch_template/CloudLaunchTemplatePluginManager.php

...ch_template/CloudLaunchTemplatePluginManagerInterface.php