adding validation for componentconfig

adding validation to cmd kube-scheduler

Add support for ipv6 in IsValidSocketAddr function

updating copyright date in componentconfig/validation/validation.go

updating copyright date in componentconfig/validation/validation_test.go

adding validation for cli options

adding BUILD files

updating validate function to return []errors in cmd/kube-scheduler

ok, really returning []error this time

adding comments for exported componentconfig Validation functions

silly me, not checking structs along the way :'(

refactor to avoid else statement

moving policy nil check up one function

rejigging some deprecated cmd validations

stumbling my way around validation slowly but surely

updating according to review from @bsalamat

- not validating leader election config unless leader election is enabled
- leader election time values cannot be zero
- removing validation for KubeConfigFile
- removing validation for scheduler policy

leader elect options should be non-negative

adding test cases for renewDeadline and leaseDuration being zero

fixing logic in componentconfig validation 😅

removing KubeConfigFile reference from tests as it was removed in master

https://github.com/kubernetes/kubernetes/commit/2ff9bd6699ccdfb1f46c4aeda01518990ff71eda

removing bogus space after var assignment

adding more tests for componentconfig based on feedback

making updates to validation because types were moved on master

update bazel build

adding validation for staging/apimachinery

adding validation for staging/apiserver

adding fieldPaths for staging validations

moving staging validations out of componentconfig

updating test case scenario for staging/apimachinery

./hack/update-bazel.sh

moving kube-scheduler validations from componentconfig

./hack/update-bazel.sh

removing non-negative check for QPS

resourceLock required

adding HardPodAffinitySymmetricWeight 0-100 range to cmd flag help section