gNMI-1.10 TestPlan: Fabric redundancy (#1968)

* Create README.md

* Create Fabric

* Delete Fabric

* Create feature.textproto

* Fabric Redundancy

* Update README.md

* .

* Update feature.textproto

* Update feature.textproto

* Update README.md

* Update README.md

* Update README.md

* Update README.md

* Update README.md

* Update metadata.textproto

* Update README.md

* Update README.md

feature/platform/fabric/feature.textproto

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+id {
+  name: "platform_fabric"
+  version: 1
+}
+
+# Classifiers
+config_path {
+  path: "/components/component/fabric/config/power-admin-state"
+}
+telemetry_path {
+  path: "/components/component/fabric/state/power-admin-state"
+}
+telemetry_path {
+  path: "/components/component/fabric/state/power-admin-state"
+}
+telemetry_path {
+  path: "/components/component/state/description"
+}
+telemetry_path {
+  path: "/components/component/state/hardware-version"
+}
+telemetry_path {
+  path: "/components/component/state/id"
+}
+telemetry_path {
+  path: "/components/component/state/mfg-name"
+}
+telemetry_path {
+  path: "/components/component/state/name"
+}
+telemetry_path {
+  path: "/components/component/state/oper-status"
+}
+telemetry_path {
+  path: "/components/component/state/parent"
+}
+telemetry_path {
+  path: "/components/component/state/part-no"
+}
+telemetry_path {
+  path: "/components/component/state/serial-no"
+}
+telemetry_path {
+  path: "/components/component/state/type"
+}
+telemetry_path {
+  path: "/components/component/state/location"
+}
+telemetry_path {
+  path: "/components/component/state/last-reboot-time"
+}

feature/platform/fabric/otg_tests/fabric_redundancy_test/README.md

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+# gNMI-1.14 Fabric redundnacy test
+
+## Summary
+- collect inventory data for each fabric card
+- Verify last restart time is updated
+- verify traffic could be forwarded with one of Fabric Card inactive.
+
+## Procedure
+### topology and basic setup
+*  Connect OTG port1 to DUT port1 and OTG port2 to DUT port2
+*  Configure IPv6 addresses on both links
+### test 1 Fabric inventory
+
+* collect following attributes for each component of FABRIC_CARD type and verify corectness (mostly non-empty string)
+  *   /components/component/state/description             
+  *   /components/component/state/hardware-version
+  *   /components/component/state/id
+  *   /components/component/state/mfg-name
+  *   /components/component/state/name
+  *   /components/component/state/oper-status
+  *   /components/component/state/parent
+  *   /components/component/state/part-no
+  *   /components/component/state/serial-no
+  *   /components/component/state/type
+  *   /components/component/state/location
+  *   /components/component/state/last-reboot-time
+* store list of present components of FABRIC_CARD type
+
+### test 2 redundancy
+* Power down exectly one component of fabric type
+* Run traffic between ATE por1 and port 2 for 16 millions of packets on 100kpps rate and using 4000B packets.
+* verify loss-lessness (with 10E-6 tolerance); Since remaining fabric is not overloaded in any form
+  with above traffic pattern 0 losses is expected
+* Power up all components
+
+### test 3 last reboot time
+* Select one component from list of available
+* store last-reboot-time for this component as "PREVIOUS_REBOOT_TIME"
+* Power down this component, wait 60 sec.
+* Power up this component
+* Wait
+* get last-reboot-time and compare with "PREVIOUS_REBOOT_TIME". The "PREVIOUS_REBOOT_TIME" must be smaller (earlier) then recently collected last-reboot-time
+
+
+## Config Parameter coverage
+
+*   /components/component/fabric/config/power-admin-state
+
+## Telemetry Parameter coverage
+
+*   /components/component/fabric/state/power-admin-state
+*   /components/component/state/description             
+*   /components/component/state/hardware-version
+*   /components/component/state/id
+*   /components/component/state/mfg-name
+*   /components/component/state/name
+*   /components/component/state/oper-status
+*   /components/component/state/parent
+*   /components/component/state/part-no
+*   /components/component/state/serial-no
+*   /components/component/state/type
+*   /components/component/state/location
+*   /components/component/state/last-reboot-time
+
+## Minimum DUT platform requirement
+*   MFF

feature/platform/fabric/otg_tests/fabric_redundancy_test/metadata.textproto

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+# proto-file: github.com/openconfig/featureprofiles/proto/metadata.proto
+# proto-message: Metadata
+
+uuid: ""
+plan_id: "gNMI-1.14"
+description: "fabric redundancy test"
+testbed: TESTBED_DUT_ATE_2LINKS