Merge pull request #43 from itaifrenkel/master

CLOUDIFY-1811 Added root cause to exception message
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CLOUDIFY-1855 updated the default linux image id in Rackspace
CLOUDIFY-1787 Windows processes launched with redirection to file now generate a temp batch script which runs the actual command
Build version advanced to 4985-167
CLOUDIFY-1857 Errors will not be registered in-case running uninstall command
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