Pin SQLAlchemy to 0.7.x

0.7.10 has been released and is compatible with 0.7.x. Instead
of pinning to 0.7.9, simply pin to 0.7.x to avoid SQLAlchemy 0.8

Change-Id: Iea57598698b4faf906e82a2974497221d07f4d16
Fix nova-manage --version

Fixes bug #1138844

Pass the version kwarg to cfg.CONF() so that --version shows the
version number.

Change-Id: I589ebffec67ef00f8ba24f553bf3e81806aa50b6
Fix: Managers that incorrectly derive from SchedulerDependentManager

Change conductor and network managers to be ordinary managers. Also
remove some unnecessary imports from managers already declared with
base manager classes in nova/manager.py.

Resolves bug 1154070.

Change-Id: I6b87cd5d7d5ef66425d084db667a6eff247cf0b1
Delete instance metadata when delete VM

* like everything else instance metadata is just soft deleted.
* This doesn't soft delete instance_system_metadata (bug 1153827)

Fix bug 1092408

Change-Id: Iebc2c7e055a110e5067829569127a272a1a92a87
Merge "Fix: Managers that incorrectly derive from SchedulerDependentManager"
Merge "Delete instance metadata when delete VM"
Merge "Pin SQLAlchemy to 0.7.x"
Switch to final 1.1.0 oslo.config release

Fixes bug #1128256

oslo.config has now been released to PyPI in time for Grizzly RC1 so
we can switch to using it directly.

Change-Id: I655f831718ae5f4e25e941ee206fe195214a9a91
Merge "Fix nova-manage --version"
Merge "Switch to final 1.1.0 oslo.config release"