Closes gh-5237

Closes gh-5252

Closes gh-5251

Closes gh-5250

Closes gh-5249

Closes gh-5248

Closes gh-5247

Closes gh-5246

Closes gh-5245

Closes gh-5244

Closes gh-5243

Closes gh-5242

Closes gh-5241

Closes gh-5240

Closes gh-5239

Closes gh-5238

Closes gh-5237

Closes gh-5236

Closes gh-5235

* gh-5197:
  Add nifty-spring-boot-starter to list of third-party starters

Closes gh-5197

* gh-5205:
  Fix namespace declarations in Hazelcast xml's and make them consistent

If a JCache provider is started with hazelcast and the default settings,
the underlying `HazelcastInstance` is disposed at the end of the
process, not when the `CacheManager` is closed.

This commit fixes the only test that use such setup.

See also https://github.com/hazelcast/hazelcast/issues/7606

Closes gh-5209

An overhaul of the `RedisCacheManager` is expected in Hopper (to be
consumed by Spring Boot 1.4). One of those changes is to make sure every
key have a decent prefix by default.

This commit enables the use of prefix as it is disabled by default.

Closes gh-5175

This commit enhances the default launch script to allow the default
values for LOG_FOLDER and PID_FOLDER to be set at build time. They
can now be set using the logFolder and pidFolder properties
respectively.

Closes gh-4787