Bug 906740 - Update error message

* Replace "rhc-tail-files" with command "rhc tail"
Bug 911956 - Fixed miss-spelled method name

* ApplicationContainer#thread_dump should have been threaddump
Merge pull request #1386 from jwhonce/dev/bz906740

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Merge pull request #1387 from jwhonce/dev/threaddump

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Adding path to resolve useradd
Merge pull request #1389 from kraman/master

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Add existing community carts to v1 cart list
Switch from VirtualHosts to mod_rewrite based routing to support high density.
Merge pull request #1390 from kraman/master

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Merge pull request #1391 from rmillner/US3143

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Bug 912215: Use oo-ruby for interpreter
Merge pull request #1392 from ironcladlou/bz/912215

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