Renames sql_dbpool_enable to dbapi_use_tpool

This option was renamed in
https://review.openstack.org/#/c/22163/
this patch fixes up the changes.

fixes bug 1087054

Change-Id: Ia172eeef08bb8405aa9e0598e793c4d4d218501d
Describe using ntp client to sync with server

Latest change added: hwclock -w

Change-Id: I4aa6874d023925c95fadea65f6abe8c8fc5f3154
XenAPI: new deployment architecture diagram

New diagram, (with svg source) for XenServer deployments. Remove the
internal network from the diagram.

Change-Id: If54849d56e24acaa8c8bc52a691f091adf13e2c4
update quantum admin guide "limitations" section for grizzly

bug 1156794

Change-Id: Iab57a1bcf78edaac2e731673a8d369e92d453142
Merge "Describe using ntp client to sync with server"
Merge "Renames sql_dbpool_enable to dbapi_use_tpool"
Merge "XenAPI: new deployment architecture diagram"
Merge "update quantum admin guide "limitations" section for grizzly"
Removes nova-volumes/nova-volume surgically, replace with Block
Storage.

Not sure about lgm vs tgts, etc, in the configuration sections. It
seems ok to leave both as examples but needs review.

Fix bug 1007528
Fix bug 1074200
Fix bug 1078353
Fix bug 1153869

Patchset addresses reviewer's comments.

Patchset fixes new bug, init should be ini and troubleshooting.

Patchset addresses question about networking.

Change-Id: Ib6f325ba11c5cff01364ef787c52cdc57ee8f70f