Bug 1053485 - Changing GID_MIN in login.defs prevents app creation

This patch was originally submitted by Josep 'Pep' Turro Mauri <pep@redhat.com>
Add support for multiple platforms in OpenShift.
Changes span both the broker and the node.

Add a setting named 'NODE_PLATFORMS' to broker.conf.
Add an optional attribute named 'platform' to cartridge manifests.
Add an optional 'Required' attribute for the 'Scaling' key to cartridge manifest.

Broker queries nodes of all platforms when building its cartridge cache.
Broker does not allow group overrides for cartridges of different platforms.
Broker uses the cartridge platform to filter nodes based on the 'kernel' fact.

Node handles the case when a web proxy cartridge is not collocated with a web cartridge.

Modify tests to take new logic into account.
Add tests to cover new code paths.
Fix "create scalable app with custom web_proxy" test expectation.
Fix getting cart from CartridgeCache in the context of an application.
Merge pull request #4933 from brenton/BZ1053485

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Bug 1067008 - Guard gear delete from missing Cartridge IDENT
Merge pull request #4948 from danmcp/master

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Merge pull request #4949 from jwhonce/bug/1067008

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Merge pull request #4944 from UhuruSoftware/master

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Bug 1076008 - Fix pgrep regex usage

* procps-3.2.8 has a bug where trailing $ in regexp causes match
  failure. Fixed in procps-ng
Bug 1076032 - Attempting to unlock closed file descriptor

* Add guard to stop attempting to unlock a closed file descriptor
Merge pull request #4951 from jwhonce/bug/1076008

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Merge pull request #4952 from jwhonce/bug/1076032

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add xpaas tag to eap cartridge
Merge pull request #4953 from bparees/eap_to_xpaas

Merged by openshift-bot