Allow use of "contains" for affectedVersion and fixForVersions

We have a need to filter on version substrings so we can find all issues that affect a growing list of versions.

for example we have the following version strings:
4.1 (mainlatest)
4.1 (next)
4.1 rev 7.010
T 4.1 rev 7.018
V 4.1 rev 7
C 4.1 rev 6.012

What we'd like to do is construct filters that simply use the tilde operator (contains) so we can have a filter based on the unique substring per version i.e. affectedVersion ~ "4.1 "

Currently doing a 'smart query' for v:4.1 returns the correct set of results, but we cannot save this as an auto-updating filter