Support Nexus 7k output again (#2018)

ntc_templates/templates/cisco_nxos_show_interface_transceiver.textfsm

@@ -7,6 +7,7 @@ Value PART_NUMBER (\S+)
 Value PRODUCT_ID (\S+)
 
 Start
+  ^\S+/\S+ -> Continue.Record
   ^${INTERFACE}
   ^\s+transceiver\sis\s+${STATUS}
   ^\s+type\s+is(\s+${TYPE})?
@@ -24,5 +25,4 @@ Start
   ^\s+cisco\s+product\s+id\sis(\s+${PRODUCT_ID})?
   ^\s+cisco\s+version\s+id
   ^\s+cisco\s+vendor\s+id
-  ^\s*$$ -> Record
   ^. -> Error

tests/cisco_nxos/show_interface_transceiver/cisco_nxos_show_interface_transceiver_no-blank-lines.raw

@@ -0,0 +1,38 @@
+Ethernet3/1
+    transceiver is not present
+Ethernet3/2
+    transceiver is present
+    type is 1000base-SX
+    name is CISCO-FINISAR   
+    part number is FTRJ8519P1BNL-C4
+    revision is A   
+    serial number is FNS1009J3MT     
+    nominal bitrate is 2100 MBit/sec
+    cisco id is 3
+    cisco extended id number is 4
+Ethernet3/3
+    transceiver is present
+    type is 1000base-SX
+    name is CISCO           
+    part number is SFBR-5716PZ     
+    revision is 001 
+    serial number is AGJ1945R416     
+    nominal bitrate is 1300 MBit/sec
+    cisco id is 3
+    cisco extended id number is 4
+    cisco part number is 10-2626-01
+    cisco product id is GLC-SX-MMD          
+    cisco vendor id is V01 
+Ethernet3/4
+    transceiver is present
+    type is 1000base-SX
+    name is CISCO           
+    part number is SFBR-5716PZ     
+    revision is 001 
+    serial number is AGJ1945R41D     
+    nominal bitrate is 1300 MBit/sec
+    cisco id is 3
+    cisco extended id number is 4
+    cisco part number is 10-2626-01
+    cisco product id is GLC-SX-MMD          
+    cisco vendor id is V01

tests/cisco_nxos/show_interface_transceiver/cisco_nxos_show_interface_transceiver_no-blank-lines.yml

@@ -0,0 +1,30 @@
+---
+parsed_sample:
+  - interface: "Ethernet3/1"
+    manufacturer: ""
+    part_number: ""
+    product_id: ""
+    serial: ""
+    status: "not present"
+    type: ""
+  - interface: "Ethernet3/2"
+    manufacturer: "CISCO-FINISAR"
+    part_number: "FTRJ8519P1BNL-C4"
+    product_id: ""
+    serial: "FNS1009J3MT"
+    status: "present"
+    type: "1000base-SX"
+  - interface: "Ethernet3/3"
+    manufacturer: "CISCO"
+    part_number: "SFBR-5716PZ"
+    product_id: "GLC-SX-MMD"
+    serial: "AGJ1945R416"
+    status: "present"
+    type: "1000base-SX"
+  - interface: "Ethernet3/4"
+    manufacturer: "CISCO"
+    part_number: "SFBR-5716PZ"
+    product_id: "GLC-SX-MMD"
+    serial: "AGJ1945R41D"
+    status: "present"
+    type: "1000base-SX"