Revert "Modify command arg parsing for jobs"

This reverts commit b01a44f.

Add double quote parsing to arguments

Modifies previous command arg parsing commit (b01a44f) to include respecting double quotes

Modify command arg parsing for jobs

Split on whitespace while respecting single quotes.
Allows us to more properly handle it going forward. Internal string representation is really used only for JSON and serializing to old run script.

Re-implement URI encoding of Agent file resource

Use base64 encoding for job id as it may otherwise contain URI illegal characters.

Create event listener that publishes SNS notifications for job status…

… changes

Add tags to LoadBalancer metrics

 - Tag the cluster selected by the ScriptLoadBalancer
 - Tag the final cluster selected by JobServiceSpecificationImpl, as long as the LoadBalancer used to choose it

Make user resource usage metrics intermittent

 - Provide a lambda that will work as long as the gauge is registered
 - Produce NaN for users not using any resources (and from nodes that are not cluster leader)

Update ClusterChecker metric counters to distinguish between differen…

…t situations

Separate metrics for:
 - Host unreachable
 - Host returning a response that cannot be parsed as health status
 - Host returning status different than UP for a (non-ignored) health indicator

Publish metric counter of jobs rejected due to user exceeding their j…

…ob limit

Update agent to match server behavior when staging job dependencies

Genie V3 downloads job dependencies and configurations to the root of the job folder.
Whereas the agent was creating 'configurations' and 'dependencies' directories.

Update the agent setup code to match the server setup code.