HA policies: use ConfigKeys
Adds config for ServiceReplacer.SET_ON_FIRE_ON_FAILURE
Improve test coverage for ServiceReplacer/ServiceRestarter
Merge pull request #959 from ahgittin/misc

minor tidies from the field
Fix EntityPollingTest jmx

- was hanging for long time when trying to use jmxMP to connect to rmi
SshFeed: add execAsCommand() option

Adds execAsCommand() and execAsScript() (default) to determine which SshTool method is used to run the command. Required for Windows compatibility, as the execScript function is incompatible with Windows.
Expose override of SSH host and port; use w/ knife

SshMachineLocation allows the hostname and port number for SSH access to be overridden, while still having the main MachineLocation address unchanged. This is useful for cases where the "address" is a private IP that is not reachable by the Brooklyn management console, but a firewall/port-forwarding configuration allows it to be SSH-accessible on an alternative hostname and port number. Adds a public method that retrieves the SSH host and port.

Alters the "knife converge" task to extract this alternative host-and-port and use it in the bootstrap operation (as knife delegates to ssh to do the actual work).
Reinstate use of knifeWhichPort() method

https://github.com/brooklyncentral/brooklyn/pull/961#discussion-diff-6882445 noted that not using knifeWhichPort() meant that a few explicit configuration options were now ignored. Change implementation to continue to use this method, but taking the HostAndPort instance instead of SshMachineLocation.
Merge pull request #961 from richardcloudsoft/odds-and-ends

Misc fixes for Windows and private-network clouds
Adds EmptySoftwareProcess to software/base
Add NginxIntegrationTest.testRestart
Adds AbstractNonProvisionedController (for cloud load balancers)

- does not create a VM, unlike AbstractController
- also updates things to use LoadBalancer, rather than AbstractController
LoadBalancer: promote config up the hierarchy
Display ConfigKeys of enum types as drop-down list

In the Add Application wizard, required config keys that are enumerated types will appear as drop-down lists.
Merge pull request #963 from richardcloudsoft/config-key-drop-down-list

Display ConfigKeys of enum types as drop-down list
Merge pull request #962 from aledsage/feature/cloud-loadbalancers

Feature: cloud LoadBalancers support
JcloudsLocation: No NPE if setup.script is given but not setup.script.vars
Correct typo in Reference and remove duplicate pom dependency in test-support.
Adds MACHINE_CREATE_ATTEMPTS JcloudsLocation config

Use to retry VM creation when exceptions are thrown, e.g. when AWS VMs
are dead on arrival. (Has successfully kept at least one run of
brooklyn-marklogic demo on track.)
typo in docs walkthrough