'specval' must be optional and word characters only
'specval' must be optional and word characters only

The 'specval' is optional - and so is the space in front of it; so we now make
the whole group optional.  We also make sure that specval is only word
characters, so it doesn't absorb a nearby key=value pair.

RedHatInsights/insights-core,RedHatInsights/insights-core