Allow SdkManager to be constructed with a given LocalSdk

We usually just need a LocalSdk in the tools now, but for
the install wizard we still need an SdkManager, and we'd like
to use the existing LocalSdk for this case rather than constructing
a new one.

Change-Id: Ia8527edde2ddb7c7f34ac5b966d3e24c02ddcfe5
1 file changed