Consider Maintenance Mode and increase connection limits in newer SolidFire releases

Minor changes

• Don't count nodes in Maintenance Mode (currently applies to SolidFire 12.0, 12.2, 12.3) towards maximum for cluster iSCSI connections
• Use 1,000 maximum iSCSI connections per node (currently applies to SolidFire 11.8 to 12.3) and continue to use 700 for older (pre-11.8)

Refresh release for two node NetApp HCI clusters

• No new features, just a more conservative formula for Max iSCSI Sessions because the old formula was a bit too generous for 2-node clusters that have been available since earlier this year (SolidFire storage clusters that are part of NetApp HCI).
• Existing users happy with v2.0 (or other) should keep using the version that works for them. See Known issues and workarounds in README for additional details.

Refresh release for Python 3 and Element v11.0

Notable changes

• Plugin updated to work with SolidFire/Element v11 and Python 3

New features

• none