Description of problem:
trying to install a package to a host collection via hammer:

hammer> host-collection package install --id=1 --packages=sysstat --organization-id=1
Could not schedule installation of package(s):
  Error: The server does not support such operation.
hammer> 


Version-Release number of selected component (if applicable):
Sat6.2.3
tfm-rubygem-hammer_cli-0.5.1.11-4.el7sat.noarch


How reproducible:
100%


Steps to Reproduce:
1. Create a host collection (with id 1) and add some content hosts in it
2. Run:
hammer -u admin -p redhat host-collection package install --id=1 --packages=sysstat --organization-id=1


Actual results:
Could not schedule installation of package(s):
  Error: The server does not support such operation.


Expected results:
Packages installed.


Additional info:
WebUI action for the same works fine.