$websocket_log level is not configurable

[jrafanie]

The default log level for the websocket_log is info and the messages mirrored to the evm.log are ERROR. We don't expose a way to configure the log level for this logger.

irb(main):001:0> $websocket_log.level
=> 1
irb(main):002:0> $websocket_log.mirror_level
=> 3

We should expose the log level for this logger, similar to how we do for many other mirrored loggers:

manageiq/lib/vmdb/loggers.rb

Lines 28 to 37 in 7dce38b

	apply_config_value(config, $vim_log, :level_vim, :level_vim_in_evm)
	apply_config_value(config, $rhevm_log, :level_rhevm, :level_rhevm_in_evm)
	apply_config_value(config, $aws_log, :level_aws, :level_aws_in_evm)
	apply_config_value(config, $kube_log, :level_kube, :level_kube_in_evm)
	apply_config_value(config, $mw_log, :level_mw, :level_mw_in_evm)
	apply_config_value(config, $scvmm_log, :level_scvmm, :level_scvmm_in_evm)
	apply_config_value(config, $api_log, :level_api, :level_api_in_evm)
	apply_config_value(config, $fog_log, :level_fog, :level_fog_in_evm)
	apply_config_value(config, $azure_log, :level_azure, :level_azure_in_evm)
	apply_config_value(config, $lenovo_log, :level_lenovo, :level_lenovo_in_evm)

cc @skateman