Adding in reference to dell_raid and in crowbar.json
Fix to point to dell_raid directory
Use new iptables syntax

Move the negation operator (`!`) to be before that option, so that it
also works on openSUSE and not just SLES. New syntax works on both.
Merge pull request #1823 from Raajeev/pull-req-master-953c0c959c430cb0d27a63a182124eb5c41c97fe

Changing pointers for raid barclamp to dell_raid [1/1]
Implement a --help option

Handle --help nicely.
install-chef-suse: Wait for chef-expander to finish before starting state transitions

Not waiting here can cause the chef searches that crowbar does immediately when
starting a state transition to return incomplete results and cause a broken
setup.
Merge pull request #1824 from dirkmueller/suse/install_chef/usage

Implement a --help option
Merge pull request #1825 from rhafer/master

install-chef-suse: Wait for chef-expander to finish before starting state transitions
install-chef-suse: Check that we're running inside screen
install-chef-suse: Clean up chef database and installed barclamps

Before doing useful stuff, it's safer to start with a clean state.

One thing worth mentioning: the sed command to substitute the
machine-install password in crowbar.json is a bit more complex now, so
that it can deal with overwriting previous passwords. This quote from
http://austinmatzko.com/2008/04/26/sed-multi-line-search-and-replace/
explains it:

  sed -n '
  # if the first line copy the pattern to the hold buffer
  1h
  # if not the first line then append the pattern to the hold buffer
  1!H
  # if the last line then ...
  $ {
        # copy from the hold to the pattern buffer
        g
        # do the search and replace
        s/<h2.*</h2>/No title here/g
        # print
        p
  }
  '
barclamp_uninstall: Fix exception when removing non-existing file

If a file in filelist.txt doesn't exist, we shouldn't abort with an
exception trying to remove that file.
install-chef-suse: Rework option handling and add --verbose