add ping node utils and update tests

[A-Harby]

Description

Add the Ping node function in utils to check every node that will be used in the tests before using it, preventing false-failing tests.

[xmonader]

there's a pingNode function available on the client

tfgrid-sdk-ts/packages/grid_client/src/modules/zos.ts

Line 46 in e367620

async pingNode(options: PingNodeOptionsModel): Promise<boolean> {

P.S don't name functions checkNodeAvail it's incomplete and doesn't communicate the meaning

[A-Harby]

there's a pingNode function available on the client

tfgrid-sdk-ts/packages/grid_client/src/modules/zos.ts

Line 46 in e367620

async pingNode(options: PingNodeOptionsModel): Promise<boolean> {

P.S don't name functions checkNodeAvail it's incomplete and doesn't communicate the meaning

I'm using pingNode function to check node state and return its ID.

Updated function name 30e3cb2

[mohamedamer453]

Lgtm, and i ran the tests locally and everything went smoothly and passed.