[meta] 3.8 release (bugfix/patches)

I'd like to start keep to a roughly bimonthly release schedule... putting 3.8 in week 42.

No promises though ... a security release could be earlier and if life prevents it it could be delayed.

Note: #2793889: [meta] 3.7.1 release (bugfix/patches)

I've started drafting the release notes on http://docs.aegirproject.org/en/3.x/release-notes/3.8/

quick update... a lot happened this week

• @memtkmcc committed a bunch more nginx work
• @jonpugh worked more on the travis/docker tests
• a few of the jenkins tests were 'randomly' failing, some caused by regressions

I'm giving it a few more days to stabilize.

3.8 is released ... http://docs.aegirproject.org/en/3.x/release-notes/3.8/

Next up is: #2822806: [meta] 3.9 release (bugfix/patches)