Properties persistency #825

Job	Run time
build-examples (4.2, make, aggregates)	51s
build-examples (4.2, make, datastreams)	47s
build-examples (4.2, make, encryption)	48s
build-examples (4.2, make, non_volatile_storage)	32s
build-examples (4.2, make, properties)	42s
build-examples (4.2, make, registration)	1s
build-examples (4.2, make, toggle_led)	1s
build-examples (4.2, idf, aggregates)	52s
build-examples (4.2, idf, datastreams)	53s
build-examples (4.2, idf, encryption)	53s
build-examples (4.2, idf, non_volatile_storage)	53s
build-examples (4.2, idf, properties)	53s
build-examples (4.2, idf, registration)	51s
build-examples (4.2, idf, toggle_led)	53s
build-examples (5.1, idf, aggregates)	1s
build-examples (5.1, idf, datastreams)	1s
build-examples (5.1, idf, encryption)	1s
build-examples (5.1, idf, non_volatile_storage)	1s
build-examples (5.1, idf, properties)	1s
build-examples (5.1, idf, registration)	1s
build-examples (5.1, idf, toggle_led)	1s
	9m 57s

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