buglabs-osgi: make util.shell service executable on start.
buglabs-osgi: make util.shell service executable on start.

Change-Id: I2fb73f8fa3e6ce83560c12f129afbccdb2f29aa4

buglabs/oe-buglabs,buglabs/oe-buglabs,buglabs/oe-buglabs,buglabs/oe-buglabs,buglabs/oe-buglabs,buglabs/oe-buglabs,buglabs/oe-buglabs,buglabs/oe-buglabs