tests: add hosts CLI tests (#638)

internal/tests/cli/boundary/_host_catalogs.bash

@@ -0,0 +1,23 @@
+function create_host_catalog() {
+  local sid=$1
+  local name=$2
+  boundary host-catalogs create static -scope-id $sid -name $name -description 'test host catalog'
+}
+
+function read_host_catalog() {
+  boundary hosts read -id $1
+}
+
+function delete_host_catalog() {
+  boundary hosts delete -id $1
+}
+
+function list_host_catalogs() {
+  boundary host-catalogs list -scope-id $1 -format json
+}
+
+function host_catalog_id() {
+  local id=$1
+  local sid=$2
+  strip $(list_host_catalogs $sid | jq -c ".[] | select(.name | contains(\"$id\")) | .[\"id\"]")
+}