Change InstallParentPath to InstallPath

[Philenst]

Not sure why we use InstallParentPath in one file but InstallPath in the rest of the code, changed it to match, also should fix #45

[tigattack]

Usage of InstallPath is counter-intuitive as that path is not actually the install path; it is, as the more commonly used InstallParentPath implies, the parent path of the install path. Further relocation of source files by the installer would need to be carried out for the parameter name InstallPath to be correct.

The Veeam configuration deployment script is the one which should be changed.

[Philenst]

Good enough reason for me, reverted Installer change and fixed it in DeployVeeamConfiguration.

[tigattack]

Thanks Phil.