Make m-shr more stable on start up

When service m-shr is restarted it tries to ensure shares and its rules.
If some error appears whole service fails to start up.
Lets catch all exceptions, log them and let service start anyway.

Closes-Bug: #1351195
Change-Id: I979932b5a80ff2e1494c361887a1c1dea63daeb5
Merge "Make m-shr more stable on start up"