tshark: update -T and -t completions

The new -t values are available since 1.12 while the the most recent -T
value was added in 2.4. Current as of v2.9.0rc0-2173-g9fcb4af6b6.
Hardcode options as executing tshark can be slow while the options do
not change that option.

completions/tshark

@@ -58,13 +58,15 @@ _tshark()
             return
             ;;
         -*T)
-            # TODO: could be parsed from "-T ." output
-            COMPREPLY=( $( compgen -W 'ps text pdml psml fields' -- "$cur" ) )
+            # Parse from: tshark -T . 2>&1 | awk -F \" '/^\t*"/ { print $2 }'
+            COMPREPLY=( $( compgen -W \
+                'pdml ps psml json jsonraw ek tabs text fields' -- "$cur" ) )
             return
             ;;
         -*t)
-            # TODO: could be parsed from "-t ." output
-            COMPREPLY=( $( compgen -W 'ad a r d dd e' -- "$cur" ) )
+            # Parse from: tshark -t . 2>&1 | awk -F \" '/^\t*"/ { print $2 }'
+            COMPREPLY=( $( compgen -W \
+                'a ad adoy d dd e r u ud udoy' -- "$cur" ) )
             return
             ;;
         -*u)