Add plural format aliases for debug command

Signed-off-by: Arnob kumar saha <arnob@appscode.com>

Author: ArnobKumarSaha

pkg/debug/elasticsearch.go

@@ -58,6 +58,7 @@ func ElasticsearchDebugCMD(f cmdutil.Factory) *cobra.Command {
 		Use: "elasticsearch",
 		Aliases: []string{
 			"es",
+			"elasticsearches",
 		},
 		Short:   "Debug helper for elasticsearch database",
 		Example: `kubectl dba debug elasticsearch -n demo sample-elasticsearch --operator-namespace kubedb`,

pkg/debug/mariadb.go

@@ -58,6 +58,7 @@ func MariaDBDebugCMD(f cmdutil.Factory) *cobra.Command {
 		Use: "mariadb",
 		Aliases: []string{
 			"md",
+			"mariadbs",
 		},
 		Short:   "Debug helper for mariadb database",
 		Example: `kubectl dba debug mariadb -n demo sample-mariadb --operator-namespace kubedb`,

pkg/debug/mongodb.go

@@ -58,6 +58,7 @@ func MongoDBDebugCMD(f cmdutil.Factory) *cobra.Command {
 		Use: "mongodb",
 		Aliases: []string{
 			"mg",
+			"mongodbs",
 		},
 		Short:   "Debug helper for mongodb database",
 		Example: `kubectl dba debug mongodb -n demo sample-mongodb --operator-namespace kubedb`,

pkg/debug/mysql.go

@@ -58,6 +58,7 @@ func MySQLDebugCMD(f cmdutil.Factory) *cobra.Command {
 		Use: "mysql",
 		Aliases: []string{
 			"my",
+			"mysqls",
 		},
 		Short:   "Debug helper for mysql database",
 		Example: `kubectl dba debug mysql -n demo sample-mysql --operator-namespace kubedb`,

pkg/debug/postgres.go

@@ -58,6 +58,7 @@ func PostgresDebugCMD(f cmdutil.Factory) *cobra.Command {
 		Use: "postgres",
 		Aliases: []string{
 			"pg",
+			"postgreses",
 		},
 		Short:   "Debug helper for postgres database",
 		Example: `kubectl dba debug postgres -n demo sample-postgres --operator-namespace kubedb`,

pkg/debug/redis.go

@@ -58,6 +58,7 @@ func RedisDebugCMD(f cmdutil.Factory) *cobra.Command {
 		Use: "redis",
 		Aliases: []string{
 			"rd",
+			"redises",
 		},
 		Short:   "Debug helper for redis database",
 		Example: `kubectl dba debug redis -n demo sample-redis --operator-namespace kubedb`,