🔨 Update Jenkinsfile to use yarn

docs/CONTRIBUTING.md

@@ -96,7 +96,7 @@ _Before_ submitting a pull request, please make sure the following is done:
 	Airbnb with the
 	[lisk extension](https://github.com/LiskHQ/eslint-config-lisk-base).
 1. Format your code using [Prettier](https://prettier.io/). This can be performed manually
-   with `npm run format`.
+   with `yarn format`.
 1. Submit a pull request via GitHub. Include issue numbers in the PR title, at
 	the end with: `Description - Closes #IssueNumber`.
 1. Check that Jenkins CI tests pass (pull request turns green). First time

jenkins/Jenkinsfile

@@ -43,7 +43,7 @@ pipeline {
 			steps {
 				nvm(readFile(".nvmrc").trim()) {
 					sh '''
-					npm run format
+					yarn format
 					if [ -z "$(git status --untracked-files=no --porcelain)" ]; then
 						echo "All files formatted"
 					else

jenkins/Jenkinsfile.nightly

@@ -185,17 +185,17 @@ pipeline {
 						script { echoBanner(STAGE_NAME) }
 						dir('lisk-service') {
 							nvm(readFile('.nvmrc').trim()) {
-								dir('./services/blockchain-app-registry') { sh "npm run test:functional" }
+								dir('./services/blockchain-app-registry') { sh "yarn test:functional" }
 								dir('./services/blockchain-indexer') { 
-									sh "SERVICE_BROKER='nats://127.0.0.1:${SERVICE_BROKER_PORT}' SERVICE_INDEXER_CACHE_REDIS='redis://lisk:password@127.0.0.1:${REDIS_PORT}/2' SERVICE_INDEXER_REDIS_VOLATILE='redis://lisk:password@127.0.0.1:${REDIS_PORT}/3' SERVICE_MESSAGE_QUEUE_REDIS='redis://lisk:password@127.0.0.1:${REDIS_PORT}/4' npm run test:functional"
+									sh "SERVICE_BROKER='nats://127.0.0.1:${SERVICE_BROKER_PORT}' SERVICE_INDEXER_CACHE_REDIS='redis://lisk:password@127.0.0.1:${REDIS_PORT}/2' SERVICE_INDEXER_REDIS_VOLATILE='redis://lisk:password@127.0.0.1:${REDIS_PORT}/3' SERVICE_MESSAGE_QUEUE_REDIS='redis://lisk:password@127.0.0.1:${REDIS_PORT}/4' yarn test:functional"
 								}
-								dir('./services/fee-estimator') { sh "npm run test:functional" }
+								dir('./services/fee-estimator') { sh "yarn test:functional" }
 								dir('./services/market') { 
-									sh "SERVICE_BROKER='nats://127.0.0.1:${SERVICE_BROKER_PORT}' SERVICE_MARKET_REDIS='redis://lisk:password@127.0.0.1:${REDIS_PORT}/10' npm run test:functional"
+									sh "SERVICE_BROKER='nats://127.0.0.1:${SERVICE_BROKER_PORT}' SERVICE_MARKET_REDIS='redis://lisk:password@127.0.0.1:${REDIS_PORT}/10' yarn test:functional"
 								}
-								dir('./services/transaction-statistics') { sh "SERVICE_BROKER='nats://127.0.0.1:${SERVICE_BROKER_PORT}' npm run test:functional" }
-								dir('./framework') { sh "REDIS_URL='redis://lisk:password@127.0.0.1:${REDIS_PORT}/0' npm run test:functional" }
-								dir('./services/blockchain-connector') { sh "SERVICE_BROKER='nats://127.0.0.1:${SERVICE_BROKER_PORT}' npm run test:functional" }
+								dir('./services/transaction-statistics') { sh "SERVICE_BROKER='nats://127.0.0.1:${SERVICE_BROKER_PORT}' yarn test:functional" }
+								dir('./framework') { sh "REDIS_URL='redis://lisk:password@127.0.0.1:${REDIS_PORT}/0' yarn test:functional" }
+								dir('./services/blockchain-connector') { sh "SERVICE_BROKER='nats://127.0.0.1:${SERVICE_BROKER_PORT}' yarn test:functional" }
 							}
 						}
 					}