(#1541) Update scenarios.md with new tests

This should have been included in the last commit where the associated
PR was merged in.

Scenarios.md

@@ -1,6 +1,6 @@
 ## Chocolatey Usage Scenarios
 
-### ChocolateyInstallCommand [ 35 Scenario(s), 293 Observation(s) ]
+### ChocolateyInstallCommand [ 37 Scenario(s), 305 Observation(s) ]
 
 #### when force installing a package that depends on an unavailable newer version of an installed dependency forcing dependencies
 
@@ -351,6 +351,24 @@
  * should still have a package in the lib directory
  * should still have the expected version of the package installed
 
+#### when installing new package from priority source
+
+ * should have a successful package result
+ * should install a package in the lib directory
+ * should install lower version of package
+ * should install where install location reports
+ * should not have inconclusive package result
+ * should not have warning package result
+
+#### when installing new package from priority source with repository optimization
+
+ * should have a successful package result
+ * should install a package in the lib directory
+ * should install lower version of package
+ * should install where install location reports
+ * should not have inconclusive package result
+ * should not have warning package result
+
 #### when installing packages with packages config
 
  * should contain a message that upgradepackage with an expected specified version was installed