Reduce config required to use Redis.

[eileenmcnaughton]

Overview

Specifying the default port sensibly removes one config step & makes sysadmins happier

Before

Sysadmins had to specify the port if using Redis

After

Sysadmins only have to specify the port if using Redis & it is non-standard

Technical Details

Note this will only apply to new installs

Comments

@totten this came off testing your Redis patch

[civibot]

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[seamuslee001]

This only changes the template and makes sense to me adding merge on pass

[eileenmcnaughton]

thanks @seamuslee001