Fix typo in name of gc_cpu_fraction field (influxdata#7425)

plugins/inputs/kapacitor/README.md

@@ -49,7 +49,7 @@ The Kapacitor plugin collects metrics from the given Kapacitor instances.
     - [buck_hash_sys_bytes](#buck_hash_sys_bytes) _(integer)_
     - [frees](#frees) _(integer)_
     - [gc_sys_bytes](#gc_sys_bytes) _(integer)_
-    - [gcc_pu_fraction](#gcc_pu_fraction) _(float)_
+    - [gc_cpu_fraction](#gcc_pu_fraction) _(float)_
     - [heap_alloc_bytes](#heap_alloc_bytes) _(integer)_
     - [heap_idle_bytes](#heap_idle_bytes) _(integer)_
     - [heap_in_use_bytes](#heap_in_use_bytes) _(integer)_
@@ -178,7 +178,7 @@ The number of heap objects freed.
 #### gc_sys_bytes
 The number of bytes of memory used for garbage collection system metadata.
 
-#### gcc_pu_fraction
+#### gc_cpu_fraction
 The fraction of Kapacitor's available CPU time used by garbage collection since
 Kapacitor started.
 
@@ -306,7 +306,7 @@ these values.
 ```
 $ telegraf --config /etc/telegraf.conf --input-filter kapacitor --test
 * Plugin: inputs.kapacitor, Collection 1
-> kapacitor_memstats,host=hostname.local,kap_version=1.1.0~rc2,url=http://localhost:9092/kapacitor/v1/debug/vars alloc_bytes=6974808i,buck_hash_sys_bytes=1452609i,frees=207281i,gc_sys_bytes=802816i,gcc_pu_fraction=0.00004693548939673313,heap_alloc_bytes=6974808i,heap_idle_bytes=6742016i,heap_in_use_bytes=9183232i,heap_objects=23216i,heap_released_bytes=0i,heap_sys_bytes=15925248i,last_gc_ns=1478791460012676997i,lookups=88i,mallocs=230497i,mcache_in_use_bytes=9600i,mcache_sys_bytes=16384i,mspan_in_use_bytes=98560i,mspan_sys_bytes=131072i,next_gc_ns=11467528i,num_gc=8i,other_sys_bytes=2236087i,pause_total_ns=2994110i,stack_in_use_bytes=1900544i,stack_sys_bytes=1900544i,sys_bytes=22464760i,total_alloc_bytes=35023600i 1478791462000000000
+> kapacitor_memstats,host=hostname.local,kap_version=1.1.0~rc2,url=http://localhost:9092/kapacitor/v1/debug/vars alloc_bytes=6974808i,buck_hash_sys_bytes=1452609i,frees=207281i,gc_sys_bytes=802816i,gc_cpu_fraction=0.00004693548939673313,heap_alloc_bytes=6974808i,heap_idle_bytes=6742016i,heap_in_use_bytes=9183232i,heap_objects=23216i,heap_released_bytes=0i,heap_sys_bytes=15925248i,last_gc_ns=1478791460012676997i,lookups=88i,mallocs=230497i,mcache_in_use_bytes=9600i,mcache_sys_bytes=16384i,mspan_in_use_bytes=98560i,mspan_sys_bytes=131072i,next_gc_ns=11467528i,num_gc=8i,other_sys_bytes=2236087i,pause_total_ns=2994110i,stack_in_use_bytes=1900544i,stack_sys_bytes=1900544i,sys_bytes=22464760i,total_alloc_bytes=35023600i 1478791462000000000
 > kapacitor,host=hostname.local,kap_version=1.1.0~rc2,url=http://localhost:9092/kapacitor/v1/debug/vars num_enabled_tasks=5i,num_subscriptions=5i,num_tasks=5i 1478791462000000000
 > kapacitor_edges,child=stream0,host=hostname.local,parent=stream,task=deadman-test,type=stream collected=0,emitted=0 1478791462000000000
 > kapacitor_ingress,database=_internal,host=hostname.local,measurement=shard,retention_policy=monitor,task_master=main points_received=120 1478791462000000000

plugins/inputs/kapacitor/kapacitor.go

@@ -171,7 +171,7 @@ func (k *Kapacitor) gatherURL(
 				"alloc_bytes":         s.MemStats.Alloc,
 				"buck_hash_sys_bytes": s.MemStats.BuckHashSys,
 				"frees":               s.MemStats.Frees,
-				"gcc_pu_fraction":     s.MemStats.GCCPUFraction,
+				"gc_cpu_fraction":     s.MemStats.GCCPUFraction,
 				"gc_sys_bytes":        s.MemStats.GCSys,
 				"heap_alloc_bytes":    s.MemStats.HeapAlloc,
 				"heap_idle_bytes":     s.MemStats.HeapIdle,

plugins/inputs/kapacitor/kapacitor_test.go

@@ -33,7 +33,7 @@ func TestKapacitor(t *testing.T) {
 		"alloc_bytes":         int64(6950624),
 		"buck_hash_sys_bytes": int64(1446737),
 		"frees":               int64(129656),
-		"gcc_pu_fraction":     float64(0.006757149597237818),
+		"gc_cpu_fraction":     float64(0.006757149597237818),
 		"gc_sys_bytes":        int64(575488),
 		"heap_alloc_bytes":    int64(6950624),
 		"heap_idle_bytes":     int64(499712),