Bug 1049626 - Allow move gear with districts, with-out districts, across districted nodes to non-districted nodes and vice versa.
Bug 1054825 - Return better error message for resources exhausted
Bug 966766
Better error message
Bug 1028919 - Do not make mcollective call for unsubscribe connection op when there is nothing to unsubscribe
Bug 982921
Bug 1040113: Handling edge cases in cleaning up downloaded cart map
Also, fixing a couple of minor issues
Merge pull request #4534 from jwhonce/bug/1054825

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Merge pull request #4535 from danmcp/master

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Merge pull request #4529 from pravisankar/dev/ravi/bug1049626

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Merge pull request #4536 from danmcp/bug982921

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Merge pull request #4531 from abhgupta/abhgupta-dev

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Fix test cases
Merge pull request #4537 from danmcp/master

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Bug 1034110
Merge pull request #4538 from danmcp/master

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Bug 998337
Merge pull request #4539 from danmcp/master

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Add more tests around downloadable cartridges

Fix minor backported issues that can occur with imported carts.
Merge pull request #4541 from smarterclayton/add_more_tests_to_emb_cart

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