added CLOUD_MACHINE_NAMER_CLASS ConfigKey to allow custom machine naming
Added CustomMachineNamer
Addressed PR comments
/applications/createLegacy returns wrong Location

JAX-RS specifies that the Response.created(URI) is relative to the
request URI, in this case /v1/applications/createLegacy. This means that
the created Location: header looked like
/v1/application/createLegacy/123456, which is incorrect. Changed method
to build an absolute URI so that JAX-RS does not try to change it.
Fix failures in ApplicationResourceIntegrationTest

Jersey resource tests seemed to get very confused when trying to use the
application create endpoint that takes byte[] and tries to autodetect.
Changed to use the explicit 'createLegacy' endpoint instead.

Sensors come back in the format `"stopped"` but test was looking for
`stopped` without quotes - fixed.
Wrapping variables to avoid errors when the path contains spaces.
Expose the JmxFeed builder created by JavaAppUtils connectMXBeanSensors

Allows entities to call getMxBeanSensorsBuilder and add further polls
without having to create a second JmxFeed. The existing behaviour of
connectMxBeanSensors is unchanged. Deprecates `times` in favour of
the functions in brooklyn.util.math.MathFunctions.
Don't attempt to rebind to existing applications in BrooklynLauncherTest

Test was failing because I had persisted entities that were not on the
test's classpath.
Merge pull request #1252 from sjcorbett/expose-jmx-feed-builder

Exposes JavaAppUtils' JmxFeed builder and fixes test in BrooklynLauncherTest
Added interfaces for dynamic loction support
Merge pull request #1243 from grkvlt/feature/dynamic-locations

Added interfaces for dynamic location support
Merge pull request #1254 from jdtoy/spaces_in_paths

brooklyn launch vs. spaces\ with\ paths
Merge pull request #1248 from richardcloudsoft/fix/ApplicationResourceIntegrationTest

Fix ApplicationResourceIntegrationTest
Merge pull request #1230 from Nakomis/custom-machine-naming

added CLOUD_MACHINE_NAMER_CLASS ConfigKey to allow custom machine naming