core: Remove hyphen from non-responsive for Data Center

Change non-responsive to non responsive for storage pools
to stay consistent with the rest of our statuses (e.g. "Non Operational")

Change-Id: I12df92b594850bff145a9383fa9eaf0138004b8e
Bug-Url: https://bugzilla.redhat.com/876117
Signed-off-by: Maor Lipchuk <mlipchuk@redhat.com>
core: Change Problematic enum to NonResponsive

Change the enum key of the storage pool in the engine from problematic
to non responsive.

Relate to Bug-Url: https://bugzilla.redhat.com/876117
Signed-off-by: Maor Lipchuk <mlipchuk@redhat.com>
Change-Id: If6b1b79747ee91d47945b879a1611ce6658f7aec
core: cleanup host non responsive

Clean non-responsive status for host, since it is now has been replaces
with "connecting" or "non responsive"

Change-Id: I0c31cf17c7366593bcc96b1f939592134090c9d7
Signed-off-by: Maor Lipchuk <mlipchuk@redhat.com>
core: Rephrase SMALL_VG_METADATA event log.

Reschedule STORAGE_ALERT_VG_METADATA_CRITICALLY_FULL to be printed every
15 minutes the same as it is printed for full disks events.

Reschedule STORAGE_ALERT_SMALL_VG_METADATA to be printed every 12 hours instead
of every 10 minutes, also removing GSS notion.

Change-Id: Ide22a78282ff330627a37d2b777e07c3d7021861
Signed-off-by: Maor Lipchuk <mlipchuk@redhat.com>
Bug-Url:https://bugzilla.redhat.com/910894