package: bump version to 0.5 (tech preview)
package: bump version to 0.5 (tech preview)

Major and blocker items for technical preview milestone completed,
version bumped to 0.5.

Signed-off-by: Rohit Yadav <902b9eb5dd62819678163bd5e00fbf0cbc7c264b@shapeblue.com>

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