Add isPackageInstalled and getIostatValues methods to Salt.groovy class

	- required method for implementation of related pipeline steps
	- fix for a method call to use Map

Related: PROD-28135

Change-Id: I615fd90026d3dcd0ada6e6619e9d3302b99886af
(cherry picked from commit 4512e2e2fe11fbb9d2e5bf9f89f2cacd335a32cf)
(cherry picked from commit a7744207889e2f939f66c4a2135b7b25188ddbfc)
1 file changed