Multiple machine_types/flavors are being shown for provisioning GCE Host
Description of problem:
Hammer, UI and probably API also showing every machine_type but multiple times to provision the GCE Host.
Version-Release number of selected component (if applicable):
Satellite 6.7 snap 9
Steps to Reproduce:
1. Create a GCE Compute Resource.
2. From UI:
1. While host provisioning, attempt to search any machine_type while choosing machine type.
3. From API/CLI:
1. List the machine types/flavors in Compute Resource.
Every machine_type is displayed/fetched multiple times to provision the GCE Host.
Every machine_type/flavor should be fetched once.