Previously, if more than one apt::source required the same packages to be
installed it would fail with a duplicate exec resource. This adds the name of
the source resource to the exec and gives the exec a name, moving it to a
command parameter for the exec.
The hash passing to the with method is cleaner and closer to puppet code, so
all of the with_$param have been replaced with with($hash). This also
includes two minor whitspace changes to unstable.pp and source.pp.
This also replaces the ternary switch on param_set with a hash merge,
which is cleaner and will support more use cases.
When the name is used with a file resource, it becomes difficult to test the
resource using rspec-puppet, as the name parameter gets aliased to path. So to
maintain consistency between tests and manifests, this replaces all name
parameters in file resources with the equivalent path parameter.
