Caching agent methods are confusing

[claymccoy]

Looking at the code, it isn't clear what exactly the differences are in CachingAgent and OnDemandAgent or what these methods are supposed to do. handles vs pendingOnDemandRequests are similar and the purpose of each is not clear. That latter has a confusing name.

nomadPlugin/nomad-clouddriver/src/main/kotlin/io/armory/plugin/nomad/JobCachingAgent.kt

Line 52 in 077e94c

override fun pendingOnDemandRequests(providerCache: ProviderCache) : Collection<Map<String, Any>> {