Rename functions and methods in plugins to comply with pep8

There are lots of historical camelCase function and method names
in the plugin directory even though pep8 very clearly recommends
against these other than for external backwards compatibility.

Rename all the camelCased functions and methods and fix up the
main sosreport code, examples and tests to use the new names.

Fixes Issue #112.

Signed-off-by: Bryn M. Reeves <bmr@redhat.com>
Rename copy_stuff() to collect()

The name copy_stuff() isn't as descriptive now that the data may
be being streamed into an archive without being copied into a
temporary directory. Calling it collect covers both equally well.

Signed-off-by: Bryn M. Reeves <bmr@redhat.com>
Make more names pep8 compliant across the tree

Fix policy and utility function, method and variable names to use
lower case underscored style instead of camelCase.

Related to Issue #112.

Signed-off-by: Bryn M. Reeves <bmr@redhat.com>
Merge branch 'bmr-pep8ify-names'

Conflicts:
	sos/plugins/general.py
	sos/plugins/juju.py