refactor(utils): move is mount read only function to common lib (backport #418)

[mergify]

This is an automatic backport of pull request #418 done by Mergify.
Cherry-pick of 9ad8b7a has failed:

On branch mergify/bp/v1.6.x/pr-418
Your branch is up to date with 'origin/v1.6.x'.

You are currently cherry-picking commit 9ad8b7a.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   pkg/process/process_manager.go
	modified:   vendor/github.com/longhorn/go-common-libs/io/file.go
	modified:   vendor/github.com/longhorn/go-common-libs/types/file.go
	new file:   vendor/github.com/longhorn/go-common-libs/utils/mount.go
	modified:   vendor/github.com/longhorn/go-spdk-helper/pkg/spdk/client/basic.go
	modified:   vendor/google.golang.org/grpc/clientconn.go
	modified:   vendor/google.golang.org/grpc/internal/transport/transport.go
	modified:   vendor/google.golang.org/grpc/resolver/resolver.go
	modified:   vendor/google.golang.org/grpc/resolver_wrapper.go
	modified:   vendor/google.golang.org/grpc/rpc_util.go
	modified:   vendor/google.golang.org/grpc/server.go
	modified:   vendor/google.golang.org/grpc/version.go
	modified:   vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go
	modified:   vendor/k8s.io/apimachinery/pkg/util/validation/field/errors.go
	modified:   vendor/k8s.io/apimachinery/pkg/util/wait/loop.go
	modified:   vendor/k8s.io/apimachinery/pkg/util/wait/poll.go

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   go.mod
	both modified:   go.sum
	both modified:   vendor/modules.txt

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

---

Mergify commands and options

More conditions and actions can be found in the documentation.

You can also trigger Mergify actions by commenting on this pull request:

• @Mergifyio refresh will re-evaluate the rules
• @Mergifyio rebase will rebase this PR on its base branch
• @Mergifyio update will merge the base branch into this PR
• @Mergifyio backport <destination> will backport this PR on <destination> branch

Additionally, on Mergify dashboard you can:

• look at your merge queues
• generate the Mergify configuration with the config editor.

Finally, you can contact us on https://mergify.com

[mergify]

Cherry-pick of 9ad8b7a has failed:

On branch mergify/bp/v1.6.x/pr-418
Your branch is up to date with 'origin/v1.6.x'.

You are currently cherry-picking commit 9ad8b7a.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   pkg/process/process_manager.go
	modified:   vendor/github.com/longhorn/go-common-libs/io/file.go
	modified:   vendor/github.com/longhorn/go-common-libs/types/file.go
	new file:   vendor/github.com/longhorn/go-common-libs/utils/mount.go
	modified:   vendor/github.com/longhorn/go-spdk-helper/pkg/spdk/client/basic.go
	modified:   vendor/google.golang.org/grpc/clientconn.go
	modified:   vendor/google.golang.org/grpc/internal/transport/transport.go
	modified:   vendor/google.golang.org/grpc/resolver/resolver.go
	modified:   vendor/google.golang.org/grpc/resolver_wrapper.go
	modified:   vendor/google.golang.org/grpc/rpc_util.go
	modified:   vendor/google.golang.org/grpc/server.go
	modified:   vendor/google.golang.org/grpc/version.go
	modified:   vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go
	modified:   vendor/k8s.io/apimachinery/pkg/util/validation/field/errors.go
	modified:   vendor/k8s.io/apimachinery/pkg/util/wait/loop.go
	modified:   vendor/k8s.io/apimachinery/pkg/util/wait/poll.go

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   go.mod
	both modified:   go.sum
	both modified:   vendor/modules.txt

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[ChanYiLin]

Will manually backported it