Merge pull request #49711 from dhilipkumars/UniformFileNames

Automatic merge from submit-queue

Have a uniform format for filenames across controllers

**What this PR does / why we need it**:
Bring in uniformity in filename format across all the controllers.  Now controllers are of the format 
`<controllerName>_controller.go` 
From 
```
./pkg/controller/node/nodecontroller.go
./pkg/controller/route/routecontroller.go
./pkg/controller/service/servicecontroller.go
./pkg/controller/cloud/nodecontroller.go
./pkg/controller/ttl/ttlcontroller.go
./pkg/controller/job/jobcontroller.go
./pkg/controller/daemon/daemoncontroller.go
```
TO
```
./pkg/controller/node/node_controller.go
./pkg/controller/route/route_controller.go
./pkg/controller/service/service_controller.go
./pkg/controller/cloud/node_controller.go
./pkg/controller/ttl/ttl_controller.go
./pkg/controller/job/job_controller.go
./pkg/controller/daemon/daemon_controller.go
```

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #

**Special notes for your reviewer**:

**Release note**:

```
None
```

pkg/controller/cloud/BUILD

@@ -10,7 +10,7 @@ load(
 
 go_library(
     name = "go_default_library",
-    srcs = ["nodecontroller.go"],
+    srcs = ["node_controller.go"],
     tags = ["automanaged"],
     deps = [
         "//pkg/api/v1/node:go_default_library",
@@ -36,7 +36,7 @@ go_library(
 
 go_test(
     name = "go_default_test",
-    srcs = ["nodecontroller_test.go"],
+    srcs = ["node_controller_test.go"],
     library = ":go_default_library",
     tags = ["automanaged"],
     deps = [

pkg/controller/daemon/BUILD

@@ -11,7 +11,7 @@ load(
 go_library(
     name = "go_default_library",
     srcs = [
-        "daemoncontroller.go",
+        "daemon_controller.go",
         "doc.go",
         "update.go",
     ],
@@ -61,7 +61,7 @@ go_library(
 go_test(
     name = "go_default_test",
     srcs = [
-        "daemoncontroller_test.go",
+        "daemon_controller_test.go",
         "update_test.go",
     ],
     library = ":go_default_library",

pkg/controller/job/BUILD

@@ -12,7 +12,7 @@ go_library(
     name = "go_default_library",
     srcs = [
         "doc.go",
-        "jobcontroller.go",
+        "job_controller.go",
         "utils.go",
     ],
     tags = ["automanaged"],
@@ -43,7 +43,7 @@ go_library(
 go_test(
     name = "go_default_test",
     srcs = [
-        "jobcontroller_test.go",
+        "job_controller_test.go",
         "utils_test.go",
     ],
     library = ":go_default_library",

pkg/controller/node/BUILD

@@ -57,7 +57,7 @@ go_library(
         "controller_utils.go",
         "doc.go",
         "metrics.go",
-        "nodecontroller.go",
+        "node_controller.go",
         "range_allocator.go",
         "rate_limited_queue.go",
         "taint_controller.go",

pkg/controller/route/BUILD

@@ -12,7 +12,7 @@ go_library(
     name = "go_default_library",
     srcs = [
         "doc.go",
-        "routecontroller.go",
+        "route_controller.go",
     ],
     tags = ["automanaged"],
     deps = [
@@ -41,7 +41,7 @@ go_library(
 
 go_test(
     name = "go_default_test",
-    srcs = ["routecontroller_test.go"],
+    srcs = ["route_controller_test.go"],
     library = ":go_default_library",
     tags = ["automanaged"],
     deps = [

pkg/controller/service/BUILD

@@ -12,7 +12,7 @@ go_library(
     name = "go_default_library",
     srcs = [
         "doc.go",
-        "servicecontroller.go",
+        "service_controller.go",
     ],
     tags = ["automanaged"],
     deps = [
@@ -39,7 +39,7 @@ go_library(
 
 go_test(
     name = "go_default_test",
-    srcs = ["servicecontroller_test.go"],
+    srcs = ["service_controller_test.go"],
     library = ":go_default_library",
     tags = ["automanaged"],
     deps = [

pkg/controller/ttl/BUILD

@@ -10,7 +10,7 @@ load(
 
 go_library(
     name = "go_default_library",
-    srcs = ["ttlcontroller.go"],
+    srcs = ["ttl_controller.go"],
     tags = ["automanaged"],
     deps = [
         "//pkg/controller:go_default_library",
@@ -46,7 +46,7 @@ filegroup(
 
 go_test(
     name = "go_default_test",
-    srcs = ["ttlcontroller_test.go"],
+    srcs = ["ttl_controller_test.go"],
     library = ":go_default_library",
     tags = ["automanaged"],
     deps = [