Once HTTPS is configured you would need to remove TLSv1.1 from the sslEnabledProtocols entry in the HTTPS connector statement.
Connector
compressableMimeType="text/html,text/xml,text/plain,text/css,application/javascript,application/json"
compression="on"
connectionTimeout="130000"
keepAliveTimeout="130000"
asyncTimeout="130000"
maxExtensionSize="-1"
socket.rxBufSize="131070"
socket.performanceConnectionTime="1"
socket.performanceLatency="2"
socket.performanceBandwidth="3"
socket.appReadBufSize="131070"
port="8443"
protocol="org.apache.coyote.http11.Http11NioProtocol"
maxThreads="150"
SSLEnabled="true"
sslProtocol="TLS"
sslEnabledProtocols="TLSv1.2,TLSv1.1,TLSv1,SSLv2Hello"
scheme="https"
secure="true"
clientAuth="false"
keystoreFile="full\path\to\IDASH_HOME\contrib\<idash_hostname.domain.com>.kdb"
keyAlias="<idash_hostname.domain.com>"
keystorePass="<password>" />
https://techdocs.broadcom.com/us/en/ca-mainframe-software/automation/ca-workload-automation-idash/12-1/installing/post-installation/enable-https.html