Add shared memory pools as Resource Pools

[vfebvre]

Adding HMC Shared Memory Pools as ManageIQ Resource Pools, in addition to Shared Processor Pools (#100).

On the HMC, there can only be one Shared Memory Pool per Host.

Shared Memory Pools are not currently tied to VMs as ManageIQ VMs can only have one unique parent resource pool (and it is reserved for Processor Pools).

[agrare]

Looks good, @vfebvre I wonder if we should subclass Processor and Memory resource pools:

class ManageIQ::Providers::IbmPowerHmc::InfraManager::ProcessorResourcePool < ManageIQ::Providers::IbmPowerHmc::InfraManager::ResourcePool
end
class ManageIQ::Providers::IbmPowerHmc::InfraManager::MemoryResourcePool < ManageIQ::Providers::IbmPowerHmc::InfraManager::ResourcePool
end

and pass that :type => in when we parse them, just so we can easily tell the difference later on

[miq-bot]

Checked commits vfebvre/manageiq-providers-ibm_power_hmc@0d85e12~...16ef89b with ruby 2.6.10, rubocop 1.28.2, haml-lint 0.35.0, and yamllint
10 files checked, 0 offenses detected
Everything looks fine. 👍