Pass api parameters as dsl config/cli paramters.

[abhijeetkaurav1st]

Add retries count, read timeout as cli params or config parameter. That can increase the processing of some dsl commands.

For ex: If configuration of two verified account is disturbed/screwed.calm update cache command is taking 30s (read timeout) * 3 (retries) * 2 images and subnets * 2 (no of accounts) = 360 seconds (6 minutes and no result at all)