LPS-29125 - add unit test

Hey Hugo,
For testValidVirtualHost method I use @Ignore instead of @Transactional since if I use @Transactional it will cause  the field  _virtualHostname of CompanyImpl class can not be updated, thus it cause the unit test fail. But I did not add any annotation for testValidVirtualHost, the unit test will pass test, but I worry this will leave garbage data in database thus I add a @Ignore annotation

My thoughts,  probably there is a bug with @Transactional annotation or some bug in cache implementation  of CompanyImpl class 

Here is the code snippet of getVirtualHostname method of CompanyImpl class

@Override
	public String getVirtualHostname() {
		if (_virtualHostname != null) {
			return _virtualHostname;
		}

		VirtualHost virtualHost = null;

		try {
			virtualHost = VirtualHostLocalServiceUtil.fetchVirtualHost(
				getCompanyId(), 0);
		}
		catch (Exception e) {
		}

		if (virtualHost == null) {
			return StringPool.BLANK;
		}

		_virtualHostname = virtualHost.getHostname();

		return _virtualHostname;
	}


If I removed following code 
if (_virtualHostname != null) {
return _virtualHostname;
}