Bugfix for [sc-105035]

This fix makes api.getEventStream() honor a baseUrl that has been changed
via api.setBaseUrl.

Author: Joe Goggins

src/Particle.js

@@ -2179,6 +2179,7 @@ class Particle {
 
 	// Internal method used to target Particle's APIs other than the default
 	setBaseUrl(baseUrl){
+		this.baseUrl = baseUrl;
 		this.agent.setBaseUrl(baseUrl);
 	}
 }

test/Particle.spec.js

@@ -2734,6 +2734,12 @@ describe('ParticleAPI', () => {
 			sinon.restore();
 		});
 
+		it('sets baseUrl instance property', () => {
+			const baseUrl = 'foo';
+			api.setBaseUrl(baseUrl);
+			expect(api.baseUrl).to.eql(baseUrl);
+		});
+
 		it('calls agent.setBaseUrl', () => {
 			const baseUrl = 'foo';
 			sinon.stub(api.agent, 'setBaseUrl');