split cartridge cache per feature
Removing externally_reserved_uids_size attribute from districts
Bug 965537 - Dynamically build PassEnv httpd configuration

* Update httpd configuration on each start and restart
clean pending ops script to ensure rollbacks when needed; fix downloaded manifest screening
Reload HAProxy instead of restarting it in hooks.
fix to cartridge cache test
Ignoring if initial_git_url specified as an empty string
Merge pull request #2579 from abhgupta/abhgupta-dev

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Merge pull request #2580 from jwhonce/bug/965537

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Merge pull request #2582 from mrunalp/bugs/haproxy_reload

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Merge pull request #2576 from rajatchopra/master

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Merge pull request #2581 from abhgupta/abhgupta-dev-3

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Bug 965364 - ApplicationRepository#deploy assumed template application existed

* Put guards and messaging in place for use case where cartridge did not provide application template
get submodules working in all cases
Merge pull request #2584 from jwhonce/bug/965364

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Merge pull request #2585 from danmcp/master

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Bug 962662
Merge pull request #2587 from danmcp/master

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