Add --install-root option to barclamp_install.rb [1/1]

The --install-root option can be  used  to  install all of the barclamp files
(including /updates) into separate directory tree). This is e.g. needed when
building rpms with a buildroot != /


 .../development/master/extra/barclamp_install.rb   | 36 ++++++++++++----------
 .../development/master/extra/barclamp_mgmt_lib.rb  | 13 ++++----
 .../templates/crowbar-barclamp.spec.erb            |  2 +-
 3 files changed, 28 insertions(+), 23 deletions(-)

Crowbar-Pull-ID: 56e9ae7258fc7a2fe614919a6716af92dab1e0c9

Crowbar-Release: development