Related work items: microsoft#173, microsoft#839, microsoft#856, microsoft#877, microsoft#881, microsoft#886, microsoft#887, microsoft#888, microsoft#889, microsoft#890, microsoft#893, microsoft#894, microsoft#896, microsoft#899, microsoft#900, microsoft#902, microsoft#904, microsoft#905, microsoft#906, microsoft#907, microsoft#908, microsoft#910, microsoft#912, microsoft#913, microsoft#914, microsoft#916, microsoft#918, microsoft#923, microsoft#925, microsoft#926, microsoft#928, microsoft#929, microsoft#932, microsoft#933, microsoft#934, microsoft#938, microsoft#939, microsoft#942, microsoft#943, microsoft#945, microsoft#946, microsoft#947, microsoft#949, microsoft#951, microsoft#952, microsoft#954

Resolve mount source path before passing it to HCS