Initialize update entity with None latest version (#460)

* Do not set Update entity latest version to installed version

* Add latest_version restore to update entity

Author: abmantis

tests/data/devices/adurosmart-eria-ad-rgbw3001.json

@@ -1731,7 +1731,7 @@
           "installed_version": "0x00000001",
           "in_progress": false,
           "update_percentage": null,
-          "latest_version": "0x00000001",
+          "latest_version": null,
           "release_summary": null,
           "release_notes": null,
           "release_url": null

tests/data/devices/aqara-lumi-motion-ac01.json

@@ -1162,7 +1162,7 @@
           "installed_version": "0x00000035",
           "in_progress": false,
           "update_percentage": null,
-          "latest_version": "0x00000035",
+          "latest_version": null,
           "release_summary": null,
           "release_notes": null,
           "release_url": null

tests/data/devices/aug-winkhaus-gmbh-co-kg-fm-v-zb.json

@@ -1241,7 +1241,7 @@
           "installed_version": "0x00000011",
           "in_progress": false,
           "update_percentage": null,
-          "latest_version": "0x00000011",
+          "latest_version": null,
           "release_summary": null,
           "release_notes": null,
           "release_url": null

tests/data/devices/bosch-rbsh-mms-zb-eu.json

@@ -3960,7 +3960,7 @@
           "installed_version": "0x11136760",
           "in_progress": false,
           "update_percentage": null,
-          "latest_version": "0x11136760",
+          "latest_version": null,
           "release_summary": null,
           "release_notes": null,
           "release_url": null

tests/data/devices/centralite-3405-l.json

@@ -1714,7 +1714,7 @@
           "installed_version": "0x10025310",
           "in_progress": false,
           "update_percentage": null,
-          "latest_version": "0x10025310",
+          "latest_version": null,
           "release_summary": null,
           "release_notes": null,
           "release_url": null

tests/data/devices/centralite-systems-3156105.json

@@ -2011,7 +2011,7 @@
           "installed_version": "0x1418468c",
           "in_progress": false,
           "update_percentage": null,
-          "latest_version": "0x1418468c",
+          "latest_version": null,
           "release_summary": null,
           "release_notes": null,
           "release_url": null

tests/data/devices/ecolink-4655bc0-r.json

@@ -1587,7 +1587,7 @@
           "installed_version": "0x20160921",
           "in_progress": false,
           "update_percentage": null,
-          "latest_version": "0x20160921",
+          "latest_version": null,
           "release_summary": null,
           "release_notes": null,
           "release_url": null

tests/data/devices/ericsity-gl-c-008p.json

@@ -1496,7 +1496,7 @@
           "installed_version": "0x25013001",
           "in_progress": false,
           "update_percentage": null,
-          "latest_version": "0x25013001",
+          "latest_version": null,
           "release_summary": null,
           "release_notes": null,
           "release_url": null

tests/data/devices/ericsity-gl-c-009p.json

@@ -1490,7 +1490,7 @@
           "installed_version": "0x25013001",
           "in_progress": false,
           "update_percentage": null,
-          "latest_version": "0x25013001",
+          "latest_version": null,
           "release_summary": null,
           "release_notes": null,
           "release_url": null

tests/data/devices/ewelink-ck-bl702-al-01-7009-z102lg03-1.json

@@ -1621,7 +1621,7 @@
           "installed_version": "0x00001200",
           "in_progress": false,
           "update_percentage": null,
-          "latest_version": "0x00001200",
+          "latest_version": null,
           "release_summary": null,
           "release_notes": null,
           "release_url": null