[FEA] Add qualification user tool options to support external pricing

[cindyyuanjiang]

Fixes #489

We add two qualification user tool options to support external pricing in ascli:

• --cpu_cluster_price: argument used to specify hourly CPU cluster cost
• --estimated_gpu_cluster_price: argument used to specify hourly GPU cluster cost

[cindyyuanjiang]

We tested the PR change with the following script:

export EVENT_LOGS=... # a local event log file
export PLATFORM=... # the csp platform we want to test
export CPU_CLUSTER_PROPS=... # the cpu cluster properties file for the relative platform
export CPU_CLUSTER_PRICE=... # hourly cpu cluster price for the csp platform
export GPU_CLUSTER_PRICE=... # hourly gpu cluster price for the csp platform

########################################
# running each of the CSP platforms
########################################

# run the following commands and confirm the pricing calculations are correct

ascli qualification \
  --platform $PLATFORM \
  --eventlogs $EVENT_LOGS \
  --cluster $CPU_CLUSTER_PROPS

ascli qualification \
  --platform $PLATFORM \
  --eventlogs $EVENT_LOGS \
  --cluster $CPU_CLUSTER_PROPS \
  --cpu_cluster_price $CPU_CLUSTER_PRICE

ascli qualification \
  --platform $PLATFORM \
  --eventlogs $EVENT_LOGS \
  --cluster $CPU_CLUSTER_PROPS \
  --cpu_cluster_price $CPU_CLUSTER_PRICE \
  --estimated_gpu_cluster_price $GPU_CLUSTER_PRICE