chore: add chai dependency in test apps

Author: Elena Hristova

Diff for: e2e/animation-examples/package.json

@@ -37,6 +37,7 @@
     "babel-traverse": "6.25.0",
     "babel-types": "6.25.0",
     "babylon": "6.17.4",
+    "chai": "^4.2.0",
     "lazy": "1.0.11",
     "mocha": "~5.2.0",
     "mochawesome": "~3.1.2",

Diff for: e2e/modal-navigation-ng/package.json

@@ -37,6 +37,7 @@
     "babel-traverse": "6.26.0",
     "babel-types": "6.26.0",
     "babylon": "6.18.0",
+    "chai": "^4.2.0",
     "lazy": "1.0.11",
     "mocha": "~5.2.0",
     "mochawesome": "~3.1.2",

Diff for: e2e/nested-router-tab-view/package.json

@@ -31,6 +31,7 @@
     "babel-traverse": "6.26.0",
     "babel-types": "6.26.0",
     "babylon": "6.18.0",
+    "chai": "^4.2.0",
     "lazy": "1.0.11",
     "mocha": "~5.2.0",
     "mochawesome": "~3.1.2",

Diff for: e2e/routable-animations/package.json

@@ -31,6 +31,7 @@
     "babel-traverse": "6.25.0",
     "babel-types": "6.25.0",
     "babylon": "6.17.4",
+    "chai": "^4.2.0",
     "colors": "^1.1.2",
     "lazy": "1.0.11",
     "mocha": "~5.2.0",