`cloudName` required unnecessarily

[cprussin]

In

js-url-gen/src/assets/CloudinaryFile.ts

Lines 182 to 193 in e1b9719

	validateAssetForURLCreation(): void {
	if (typeof this.cloudName === 'undefined') {
	throw 'You must supply a cloudName when initializing the asset';
	}
	const suffixContainsDot = this.suffix && this.suffix.indexOf('.') >= 0;
	const suffixContainsSlash = this.suffix && this.suffix.indexOf('/') >= 0;
	if (suffixContainsDot || suffixContainsSlash) {
	throw '`suffix`` should not include . or /';
	}
	}

a cloudName setting is explicitly required. However, in

js-url-gen/src/internal/url/cloudinaryURL.ts

Lines 20 to 51 in e1b9719

	function getUrlPrefix(cloudName: string, urlConfig: IURLConfig): string {
	const secure = urlConfig.secure;
	const privateCDN = urlConfig.privateCdn;
	const cname = urlConfig.cname;
	const secureDistribution = urlConfig.secureDistribution;
	if (!secure && !cname) {
	return `http://res.cloudinary.com/${cloudName}`;
	}
	if (secure && !secureDistribution && privateCDN) {
	return `https://${cloudName}-res.cloudinary.com`;
	}
	if (secure && !secureDistribution) {
	return `https://res.cloudinary.com/${cloudName}`;
	}
	if (secure && secureDistribution && privateCDN) {
	return `https://${secureDistribution}`;
	}
	if (secure && secureDistribution) {
	return `https://${secureDistribution}/${cloudName}`;
	}
	if (!secure && cname) {
	return `http://${cname}/${cloudName}`;
	} else {
	return 'ERROR';
	}
	}

the cloudName isn't actually even utilized if using a secureDistribution and privateCDN.

The check for cloudName should be moved into getUrlPrefix and we should only throw when omitting the cloud name for branches where it's actually utilized.