Implement persistency for properties #1032

Job	Run time
build-examples (4.4, aggregates)	2m 0s
build-examples (4.4, datastreams)	2m 6s
build-examples (4.4, encryption)	1m 55s
build-examples (4.4, non_volatile_storage)	2m 6s
build-examples (4.4, properties)	2m 1s
build-examples (4.4, registration)	2m 0s
build-examples (4.4, toggle_led)	2m 0s
build-examples (5.0, aggregates)	1m 50s
build-examples (5.0, datastreams)	1m 46s
build-examples (5.0, encryption)	1m 59s
build-examples (5.0, non_volatile_storage)	1m 49s
build-examples (5.0, properties)	1m 56s
build-examples (5.0, registration)	1m 47s
build-examples (5.0, toggle_led)	3m 31s
build-examples (5.1, aggregates)	1m 57s
build-examples (5.1, datastreams)	1m 57s
build-examples (5.1, encryption)	2m 3s
build-examples (5.1, non_volatile_storage)	1m 59s
build-examples (5.1, properties)	2m 3s
build-examples (5.1, registration)	2m 5s
build-examples (5.1, toggle_led)	1m 59s
	42m 49s

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