Add unit tests to zos grid types in the grid client

[AhmedHanafy725]

let's start with zos types creation for the deployments

• Add computecapacity module unit tests #2448
• Add deployment module unit tests #2449
• Add gateway module unit tests #2450
• Add ipv4 module unit tests #2451
• Add public_ip module unit tests #2452
• Add qsfs unit tests #2453
• Add workload unit tests #2454
• Add workload_base unit tests #2455
• Add zdb unit tests #2456
• Add zlogs unit tests #2457
• Add zmachine unit tests #2458
• Add zmount unit tests #2459
• add znet unit tests #2460
• Add volume unit tests #3219

[0oM4R]

this issue should be divided to smaller parts or modules