Clean up of storage dirs code - fix update in hybrid app installation
Fixes some issue in code handling storage directories.
Due to requirement of copying wgt's shared/ directory is addition,
situation where:
- common create storage directories step - create directories for tpk
- wgt create storage directories step - create directories for wgt
should be changed to:
- common create storage directories step - create directories for tpk and wgt
- wgt create storage directories step - only patches shared/ directory with
widget shared/ before common step
Change-Id: I10f94eafbe31497ad5216f1f5e1ce1abf81bbd44