Don't omit to show Alerts, if present, the pool list detail view

[mulkieran]

Right now, the only thing shown is pool availability actions. We should instead show the Alerts prominently, with all relevant alert codes displayed.

[bgurney-rh]

This is an example of a test pool (based on an 8 GiB block device, meaning that the "WS001" alert will appear):

$ stratis pool list
Name                Total / Used / Free    Properties                                   UUID   Alerts
spool1   8.00 GiB / 1.04 GiB / 6.96 GiB   ~Ca,~Cr, Op   33123a6c-eb66-4c6f-9097-6b9521da4551   WS001

$ stratis pool list --uuid=33123a6c-eb66-4c6f-9097-6b9521da4551
UUID: 33123a6c-eb66-4c6f-9097-6b9521da4551
Name: spool1
Actions Allowed: fully_operational
Cache: No
Filesystem Limit: 100
Allows Overprovisioning: Yes
Key Description: unencrypted
Clevis Configuration: unencrypted
Space Usage:
Fully Allocated: Yes
    Size: 8.00 GiB
    Allocated: 8.00 GiB
    Used: 1.04 GiB

One idea I had was this:

$ stratis pool list --uuid=33123a6c-eb66-4c6f-9097-6b9521da4551
UUID: 33123a6c-eb66-4c6f-9097-6b9521da4551
Name: spool1
Alerts:
    WS001    Every device belonging to the pool has been fully allocated...
    EM001    The pool will return an error on any IPC request that could...
    EM002    The pool is unable to manage itself by reacting to events...
Actions Allowed: fully_operational
Cache: No

[drckeefe]

I do like seeing the alerts listed there.