Help needed: vendor files for Prometheus support

These are the vendor files needed for Prometheus support.
I have not been able to figure out how to do this properly with gopkg.

vendor/github.com/prometheus/procfs/fixtures/net/ip_vs

@@ -0,0 +1,21 @@
+IP Virtual Server version 1.2.1 (size=4096)
+Prot LocalAddress:Port Scheduler Flags
+  -> RemoteAddress:Port Forward Weight ActiveConn InActConn
+TCP  C0A80016:0CEA wlc
+  -> C0A85216:0CEA      Tunnel  100    248        2
+  -> C0A85318:0CEA      Tunnel  100    248        2
+  -> C0A85315:0CEA      Tunnel  100    248        1
+TCP  C0A80039:0CEA wlc
+  -> C0A85416:0CEA      Tunnel  0      0          0
+  -> C0A85215:0CEA      Tunnel  100    1499       0
+  -> C0A83215:0CEA      Tunnel  100    1498       0
+TCP  C0A80037:0CEA wlc
+  -> C0A8321A:0CEA      Tunnel  0      0          0
+  -> C0A83120:0CEA      Tunnel  100    0          0
+TCP  [2620:0000:0000:0000:0000:0000:0000:0001]:0050 sh
+  -> [2620:0000:0000:0000:0000:0000:0000:0002]:0050      Route   1      0          0
+  -> [2620:0000:0000:0000:0000:0000:0000:0003]:0050      Route   1      0          0
+  -> [2620:0000:0000:0000:0000:0000:0000:0004]:0050      Route   1      1          1
+FWM  10001000 wlc
+  -> C0A8321A:0CEA      Route   0      0          1
+  -> C0A83215:0CEA      Route   0      0          2

vendor/github.com/prometheus/procfs/fixtures/net/ip_vs_stats

@@ -0,0 +1,6 @@
+   Total Incoming Outgoing         Incoming         Outgoing
+   Conns  Packets  Packets            Bytes            Bytes
+ 16AA370 E33656E5        0     51D8C8883AB3                0
+
+ Conns/s   Pkts/s   Pkts/s          Bytes/s          Bytes/s
+       4    1FB3C        0          1282A8F                0

vendor/github.com/prometheus/procfs/fixtures/net/xfrm_stat

@@ -0,0 +1,28 @@
+XfrmInError                     1
+XfrmInBufferError               2
+XfrmInHdrError                  4
+XfrmInNoStates                  3
+XfrmInStateProtoError           40
+XfrmInStateModeError            100
+XfrmInStateSeqError             6000
+XfrmInStateExpired              4
+XfrmInStateMismatch             23451
+XfrmInStateInvalid              55555
+XfrmInTmplMismatch              51
+XfrmInNoPols                    65432
+XfrmInPolBlock                  100
+XfrmInPolError                  10000
+XfrmOutError                    1000000
+XfrmOutBundleGenError           43321
+XfrmOutBundleCheckError         555
+XfrmOutNoStates                 869
+XfrmOutStateProtoError          4542
+XfrmOutStateModeError           4
+XfrmOutStateSeqError            543
+XfrmOutStateExpired             565
+XfrmOutPolBlock                 43456
+XfrmOutPolDead                  7656
+XfrmOutPolError                 1454
+XfrmFwdHdrError                 6654
+XfrmOutStateInvalid             28765
+XfrmAcquireError                24532