Dev mocha alerts

[jesusgn90]

Hello team, this PR implements basic Mocha tests to check alerts structure for main default tabs.

There are indices:

  it('GET /_cat/indices', async () => {
    const res = await needle('get', `localhost:9200/_cat/indices`, {}, headers);
    res.statusCode.should.be.eql(200);
    res.body.should.be.a('string');
  });

There is an index for today:

  it(`GET /_cat/indices/${index}`, async () => {
    const res = await needle(
      'get',
      `localhost:9200/_cat/indices/${index}`,
      {},
      headers
    );
    res.statusCode.should.be.eql(200);
    res.body.should.be.a('string');
  });

A few of checks for 000 alerts:

  describe('Manager (agent.id: 000)', () => {
    it(`GET /${index}/_search - vulnerability-detector`, async () =>
      vulnerability('000'));
    it(`GET /${index}/_search - syscheck`, async () => syscheck('000'));
    it(`GET /${index}/_search - rootcheck`, async () => rootcheck('000'));
    it(`GET /${index}/_search - pci_dss`, async () => pciDss('000'));
    it(`GET /${index}/_search - gdpr`, async () => gdpr('000'));
    it(`GET /${index}/_search - audit`, async () => audit('000'));
  });

A few of checks for 001 alerts:

  describe('Agent (agent.id: 001)', () => {
    it(`GET /${index}/_search - vulnerability-detector`, async () =>
      vulnerability('001'));
    it(`GET /${index}/_search - syscheck`, async () => syscheck('001'));
    it(`GET /${index}/_search - rootcheck`, async () => rootcheck('001'));
    it(`GET /${index}/_search - pci_dss`, async () => pciDss('001'));
    it(`GET /${index}/_search - gdpr`, async () => gdpr('001'));
    it(`GET /${index}/_search - audit`, async () => audit('001'));
  });

[jesusgn90]

Closes #869