Add expectations files for skimage.

expectations/skimage/base-android-nexus-4.json

 {
    "actual-results" : {
       "failed" : null,
       "failure-ignored" : null,
       "no-comparison" : null,
       "succeeded" : null
    },
    "expected-results" : {
       "01_original.jpg" : {
          "allowed-digests" : [
@@ skipping 40 matching lines @@
       "Upper_Right.jpg" : {
          "allowed-digests" : [
             [ "bitmap-64bitMD5", 10122895588403815825 ]
          ],
          "ignore-failure" : false
       },
       "desk_yahoonews_0.jpg" : {
          "allowed-digests" : [
             [ "bitmap-64bitMD5", 15513164475782874663 ]
          ],
-         "ignore-failure" : true
+         "ignore-failure" : false
       },
       "kokteylogo.png" : {
          "allowed-digests" : [
             [ "bitmap-64bitMD5", 168800254427225818 ]
          ],
          "ignore-failure" : false
       },
       "kokteylogo.png_[26,0,57,17]" : {
          "allowed-digests" : [
             [ "bitmap-64bitMD5", 3464562511481035166 ]
@@ skipping 57 matching lines @@
       "photo.jpg.png_[306,233,351,308]" : {
          "allowed-digests" : [
             [ "bitmap-64bitMD5", 11244796826105366429 ]
          ],
          "ignore-failure" : false
       },
       "tabl_mozilla_0.jpg" : {
          "allowed-digests" : [
             [ "bitmap-64bitMD5", 13794277939360474741 ]
          ],
-         "ignore-failure" : true
+         "ignore-failure" : false
       }
    }
 }