You ansible shell command is executed slightly differently from what you could write manually inside your linux console.
For instance the following command executed manually will display nothing.

ps -ef | grep java | grep nicotest1 | grep testmode=false

But the same command with ansible will display itself:

root     1040991  943024  0 14:55 pts/0    00:00:00 /bin/bash -c ps -ef | grep java | grep nicotest1 | grep testmode=false

The reason is that ansible execute your shell instructions as a unique command:

/bin/sh -c "ps -ef | grep java | grep nicotest1 | grep testmode=false"

Then the process created by /bin/sh -c will be displayed by ps -ef.

It’s a detail, but can be surprising sometimes for instance:

ps -ef | grep java | grep nicotest1 | grep testmode=false | wc -l

it will display 0 inside your linux console, but 1 when executed by ansible.