Add and apply RSpec/BeEq rubocop rule

This rule was added in rubocop-rspec 2.9.0. Once again, we were applying
it about 50% of the time.

spec/models/map_location_spec.rb

@@ -27,25 +27,25 @@ describe MapLocation do
 
   describe "#available?" do
     it "returns true when latitude, longitude and zoom defined" do
-      expect(map_location.available?).to be(true)
+      expect(map_location.available?).to be true
     end
 
     it "returns false when longitude is nil" do
       map_location.longitude = nil
 
-      expect(map_location.available?).to be(false)
+      expect(map_location.available?).to be false
     end
 
     it "returns false when latitude is nil" do
       map_location.latitude = nil
 
-      expect(map_location.available?).to be(false)
+      expect(map_location.available?).to be false
     end
 
     it "returns false when zoom is nil" do
       map_location.zoom = nil
 
-      expect(map_location.available?).to be(false)
+      expect(map_location.available?).to be false
     end
   end
 end