Attempting to fix RollingShutterCameraDetectorMap CI failure on CentOS (

DOI-USGS#3677)

* Update meta.yaml to rename conda package to isis from isis3

* Update maximum iterations to 50 because maxiters=20 is failing in CI on CentOS

isis/src/base/objs/RollingShutterCameraDetectorMap/RollingShutterCameraDetectorMap.cpp

@@ -141,7 +141,7 @@ namespace Isis {
     double currentLine = line;
 
     int iterations = 0;
-    int maxIterations = 20;
+    int maxIterations = 50;
 
     p_detectorSample = sample;
     p_detectorLine   = line;