Cherry-pick changes from release-0.2.

* Fix leaking password in conductor's logs.
  Fixes: bug MRN-861.
  I8130794ed9802cddfbb2f7ed285e3c13c8f05473
* Change version prefix to 0.2
  Also pbr version was synchronized with other murano
  compoments to avoid pip conflicts.
  I5222146695513b6be7a9ef6c981f6b9905a53dff

Change-Id: I80d1f67521a62878d68c800f4f648db43fb2ad9b
Merge "Cherry-pick changes from release-0.2."