Move hypervisor reset to separate methods

Similar to the code we've been building elsewhere, move Reset Hypervisor
to separate methods, and avoid lambdas.

Tested: Code compiles. Tested as part of top patch.

Change-Id: I19ee473908fac42e69985d406c34cdd6da44c2c6
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>