Groups should be recognized in the plugin section of project
configuration. They shall be referenced as a string containing both the
group name and uuid. The format to use shall be "Group[name / uuid]",
which is the string representation of a GroupReference.
Using this format will allow groups referenced in plugin configs to be
updated when a group is renamed. It will also validate that the group
exists in the groups file. This format does not follow the standard
"name = group group_name".
Project config must know about both the group name and uuid in order to
update the name and reload the config without errors. To rename a group,
the groups file [1] for each project is parsed for the uuid. If it is
found, the name is updated in the file. Groups are loaded by getting the
list of GroupReferences for a section and grabbing the name from the
file by uuid.
Utilizing GroupReferences allows project config to display the group
name without the uuid. However, plugin config entries do not support
GroupReferences. This is why the string representation of this object
is used.
[1] Documentation/config-project-config.html#file-groups
Change-Id: I1160f1f55df07243faf0034989ecbbd02a9ca19c
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