feat: Added Spark history server apis

HOW_TO_TEST.md

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+# How to run tests
+
+## Pre-requisites
+1. Download [SDK generation code](https://github.ibm.com/CloudEngineering/openapi-sdkgen/releases)
+2. Clone [`Node SDK`] https://github.com/IBM/ibm-iae-node-sdk/ 
+3. Clone [`Cloud API Doc`] https://github.ibm.com/cloud-api-docs/analytics-engine
+4. Generate the sdk code with: 
+    `openapi-sdkgen/openapi-sdkgen.sh generate -g ibm-node -i ibmanalyticsengine-v3.json -o /Users/git/ibm-iae-node-sdk --genITs --genExamples`
+5. Change to this packages root directory.
+6. Exceute 
+    ```
+    npm install
+    ```
+
+## Integration Tests
+
+1. The SDK has been generated from the latest ibmanalyticsengine-v3.json which contains modifications and newly added api methods.
+The Integration test have to run on the generated SDK not on the sdk from git. 
+2.  To merge with remote version pick the code marked between
+    `// !!! Start of custom content to be copied !!!`
+    `// !!! End of custom content to be copied !!!`
+ Files to be updated:
+ a. ibm-analytics-engine-api/v3.ts
+ b. test/unit/ibm-analytics-engine-api.v3.test.js
+ c. test/integration/ibm-analytics-engine-api.v3.test.js
+ d. examples/ibm-analytics-engine-api.v3.test.js
+
+3. Create a `auth.js` file in the `ibm-iae-node-sdk/test/resources` directory using `ibm-iae-node-sdk/test/resources/auth.example.js` as an example.
+4. Update `auth.js` file with your own **APIKEY** and other details.
+5. Execute the following command:
+    `npm install`
+    `npm run build`
+    `npm run lint-fix`
+6. Go to Project's root directory `ibm-iae-node-sdk/` directory. 
+    Run `yarn jest ibm-analytics-engine-api.v3.test.js`
+
+7. To execute individual tests
+    Run `yarn jest test/integration/ibm-analytics-engine-api.v3.test.js`.
+    Run `yarn jest examples/ibm-analytics-engine-api.v3.test.js`.
+
+## Unit Tests
+
+1. Run `jest test/unit/ibm-analytics-engine-api.v3.test.js`.