(cherry-picked from commit 99f1c7bf)

Closes gh-2723

gh-2735

Closes gh-2733

Closes gh-2729

Closes gh-2734

Closes gh-2726

See gh-2718

* vcap-service-numbers:
  Support VcapApplicationListener Number Credentials

Update VcapApplicationListener to support Number based credentials.
Previously, any service credential value that wasn't a String would
be discarded. This was particularly a problem for services that exposed
a port as a JSON Number.  This change takes numbers in the credential
payload into account, converting them to Strings so that they will pass
through the properties system properly. There's no real downside to this
as Spring will coerce them back into Numbers if needed by an application.

Fixes gh-2707

Closes gh-2582

Closes gh-2581

Fixes gh-2567

Make spring-boot-integration-tests a top level project and move the
existing gradle tests and security tests to be sub-modules.

Update invoker configuration so that only folders with a pom.xml file
are invoked. This helps when switching between the 1.1.x and master
branches since empty folders left by git no longer fail the build.

Fixes gh-2473

Closes gh-2429

Closes gh-2304

Closes gh-2503

Closes gh-2502

Closes gh-2501

Closes gh-2500

Closes gh-2499

Closes gh-2498

Closes gh-2497

Previously each endpoint was secured for path, path/, and path.*.
This meant that a request to path/foo was not secured. This commit
secures path/** to ensure that requests to a nested endpoint path are
also secured.

Fixes gh-2476

Closes gh-2425

Closes gh-2453

The property default format is lower case using hyphen. The JMX default
domain property has been harmonized to that format.

Fixes gh-2427

Spring Integration's FileWritingMessageHandler uses a .writing file
while it's in the process of writing a message to disk and then
performs a rename (depending on the OS and filesystem this may or may
not be atommic) to create the .msg file. Prior to this commit the
test was finding the temporary .writing files and examining them. This
could lead to a FileNotFoundException being thrown as the temporary
file was deleted while the test was trying to read its contents.

This commit updates the test to only look for files with a .msg suffix

Fixes gh-2428

This commit updates the documentation to describe the three steps
involved in producing a deployable war file in a single place.

Closes gh-2185