Updated appveyor to use default pip instead of calling out python2
Updated appveyor to use default pip instead of calling out python2

dev-osrose/osIROSE-new,RavenX8/osIROSE-new,dev-osrose/osIROSE-new,dev-osrose/osIROSE-new,RavenX8/osIROSE-new,RavenX8/osIROSE-new