Description of problem:
When using spacecmd and trying to get specifics from a package, it fails on every package.

Version-Release number of selected component (if applicable):
2.2.11-1.el6


How reproducible:
Run spacecmd to retrieve package details


Steps to Reproduce:
1. spacecmd package_details 389-ds-base-1.3.1.6-25.el7.x86_64


Actual results (when used with -d option):
DEBUG: : False
DEBUG: Read configuration from /root/.spacecmd/config
DEBUG: Loading configuration section [spacecmd]
DEBUG: Current Configuration: {'server': 'localhost'}
DEBUG: Configuration section [localhost] does not exist
DEBUG: Connecting to https://localhost/rpc/api
DEBUG: Server API Version = 15
DEBUG: Using cached credentials from /root/.spacecmd/localhost/session
DEBUG: Loading cache from /root/.spacecmd/localhost/ssm
DEBUG: /root/.spacecmd/localhost/ssm does not exist
DEBUG: : False
DEBUG: Loading cache from /root/.spacecmd/localhost/systems
DEBUG: Loading cache from /root/.spacecmd/localhost/errata
DEBUG: Loading cache from /root/.spacecmd/localhost/packages_short
DEBUG: Loading cache from /root/.spacecmd/localhost/packages_long
DEBUG: Loading cache from /root/.spacecmd/localhost/packages_by_id
INFO: Connected to https://localhost/rpc/api as system
** Generating package cache **ERROR: 'int' object has no attribute 'append'
Traceback (most recent call last):
  File "/usr/bin/spacecmd", line 139, in <module>
    shell.print_result(shell.onecmd( precmd ), precmd)
  File "/usr/lib64/python2.6/cmd.py", line 219, in onecmd
    return func(arg)
  File "/usr/lib/python2.6/site-packages/spacecmd/package.py", line 51, in do_package_details
    packages.extend(self.do_package_search(' '.join(args), True))
  File "/usr/lib/python2.6/site-packages/spacecmd/package.py", line 138, in do_package_search
    packages = filter_results(self.get_package_names(True),
  File "/usr/lib/python2.6/site-packages/spacecmd/misc.py", line 598, in get_package_names
    self.generate_package_cache()
  File "/usr/lib/python2.6/site-packages/spacecmd/misc.py", line 563, in generate_package_cache
    self.all_packages[longname].append(p.get('id'))
AttributeError: 'int' object has no attribute 'append'



Expected results:
Information about the package


Additional info:
The system spacewalk is running on has recently been updated from 1.7 to 2.2.