We don't really have a concept in Tekton of something called a "Workspace volume",
but multiple READMEs now refer to it.
This commit removes the term "Workspace volume" in favor of simply "Workspace".
Changes include:
- moves the golang-test task to the task directory
- copies and modifies readme file to golang-test task from golang directory
- copies OWNERS file from golang directory
- copies test directory from golang directory to golang-test task
- changes the yaml filename to match the resource name
Issue : #386
Signed-off-by: Shiv Verma <shverma@redhat.com>