Rework PdoStartDevice()

Rework PdoStartDevice()

Moves MIB table parsing, detection of aliased device and copying of network
settings to a separate function, to avoid any failures to the START_DEVICE
IRP if network alias detection and settings copying code fails. The only failure
of note is STATUS_PNP_REBOOT_REQUIRED, indicating the VM requires a reboot to
replace emulated devices.
Windows Update will reject driver updates if sufficient install failures or
failures within 2 days of install are detected (> 5% of installs). Completing
the START_DEVICE IRP with any failure other than STATUS_PNP_REBOOT_REQUIRED will
cause an installation failure (Code 10) and lead to driver updates being removed
from Windows Update.

Signed-off-by: Owen Smith <owen.smith@cloud.com>