tests: add bats tests for testing CLI on arbitrary Boundary deployments (#614)

internal/tests/cli/boundary/_users.bash

@@ -0,0 +1,24 @@
+function create_user() {
+  boundary users create -scope-id global -name $1 -description 'test user'
+}
+
+function read_user() {
+  boundary users read -id $1
+}
+
+function delete_user() {
+  boundary users delete -id $1
+}
+
+function list_users() {
+  boundary users list -format json
+}
+
+function assoc_user_acct() {
+  boundary users add-accounts -account $1 -id $2
+}
+
+function user_id() {
+  local user=$1
+  strip $(list_users | jq -c ".[] | select(.name | contains(\"$user\")) | .[\"id\"]")
+}