fix queries for GCP (#87)

Makefile

@@ -11,6 +11,8 @@ unit-test:
 	go tool cover -func coverage.out
 unit-test-coverage: unit-test
 	go tool cover -html coverage.out
+linux-docker:
+	@docker run -ti -v $(PWD):/work golang:1.13.15-stretch /bin/bash
 linux-build:
 	@GOBIN=/work/bin GO111MODULE=on GOOS=linux GOARC=x86_64 go build --mod=vendor  -o operator github.com/movetokube/postgres-operator/cmd/manager
 docker-build:

pkg/postgres/database.go

@@ -17,8 +17,8 @@ const (
 	GRANT_ALL_TABLES     = `GRANT %s ON ALL TABLES IN SCHEMA "%s" TO "%s"`
 	DEFAULT_PRIVS_SCHEMA = `ALTER DEFAULT PRIVILEGES FOR ROLE "%s" IN SCHEMA "%s" GRANT %s ON TABLES TO "%s"`
 	REVOKE_CONNECT		 = `REVOKE CONNECT ON DATABASE "%s" FROM public`
-	TERMINATE_BACKEND	 = `SELECT pg_terminate_backend(pg_stat_activity.pid) FROM pg_stat_activity	WHERE pg_stat_activity.datname = "%s" AND pid <> pg_backend_pid()`
-	GET_DB_OWNER	 	 = `SELECT pg_catalog.pg_get_userbyid(d.datdba) FROM pg_catalog.pg_database d WHERE d.datname = "%s"`
+	TERMINATE_BACKEND	 = `SELECT pg_terminate_backend(pg_stat_activity.pid) FROM pg_stat_activity	WHERE pg_stat_activity.datname = '%s' AND pid <> pg_backend_pid()`
+	GET_DB_OWNER	 	 = `SELECT pg_catalog.pg_get_userbyid(d.datdba) FROM pg_catalog.pg_database d WHERE d.datname = '%s'`
 	GRANT_CREATE_SCHEMA  = `GRANT CREATE ON DATABASE "%s" TO "%s"`
 )