feat(triggers): allow specification of triggers using SmallRye Config properties

[andrewazores]

See #217 #197 #128

This adds handling of a new config property to allow users to specify Smart Triggers by JVM system property or environment variable in addition to the previous Agent arguments method. This is useful for cases where it may be easier to add environment variables to the target application deployment than to modify the startup script to both add an Agent and append arguments for it. For example, in my typical vertx-fib-demo sample application, the gradle/jib build setup also uses an additional plugin for downloading, packaging, and configuring the Agent, but it doesn't (easily) allow for adding an argument to the Agent. This is probably a pretty rare corner case, as I would expect most users who are able to add the -javaagent flag are also able to add the argument after it, but this adds extra flexibility just in case.

diff --git a/smoketest.sh b/smoketest.sh
index 187c5a7e..f594c459 100755
--- a/smoketest.sh
+++ b/smoketest.sh
@@ -202,7 +202,7 @@ runDemoApps() {
     podman run \
         --name quarkus-test-agent-1 \
         --pod cryostat-pod \
-        --env JAVA_OPTS="-Dquarkus.http.host=0.0.0.0 -Djava.util.logging.manager=org.jboss.logmanager.LogManager -Dcom.sun.management.jmxremote.port=9097 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -javaagent:/deployments/app/cryostat-agent.jar" \
+        --env JAVA_OPTS="-Dquarkus.http.host=0.0.0.0 -Djava.util.logging.manager=org.jboss.logmanager.LogManager -Dcom.sun.management.jmxremote.port=9097 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -javaagent:/deployments/app/cryostat-agent.jar=[ThreadCount>0]~default.jfc,[ThreadCount>0&&TargetDuration>duration(\"30s\")]~Profiling" \
         --env QUARKUS_HTTP_PORT=10010 \
         --env ORG_ACME_CRYOSTATSERVICE_ENABLED="false" \
         --env CRYOSTAT_AGENT_APP_NAME="quarkus-test-agent-1" \
@@ -214,14 +214,16 @@ runDemoApps() {
         --env CRYOSTAT_AGENT_BASEURI="${protocol}://localhost:${webPort}/" \
         --env CRYOSTAT_AGENT_TRUST_ALL="true" \
         --env CRYOSTAT_AGENT_AUTHORIZATION="Basic $(echo user:pass | base64)" \
+        --env CRYOSTAT_AGENT_API_WRITES_ENABLED="true" \
         --env CRYOSTAT_AGENT_HARVESTER_PERIOD_MS=60000 \
         --env CRYOSTAT_AGENT_HARVESTER_MAX_FILES=10 \
+        --env CRYOSTAT_AGENT_SMART_TRIGGER_DEFINITIONS="[ThreadCount>0&&TargetDuration>duration(\"1m\")]~default.jfc" \
         --rm -d quay.io/andrewazores/quarkus-test:latest
 
     podman run \
         --name quarkus-test-agent-2 \
         --pod cryostat-pod \
-        --env JAVA_OPTS="-Dquarkus.http.host=0.0.0.0 -Djava.util.logging.manager=org.jboss.logmanager.LogManager -javaagent:/deployments/app/cryostat-agent.jar" \
+        --env JAVA_OPTS="-Dquarkus.http.host=0.0.0.0 -Djava.util.logging.manager=org.jboss.logmanager.LogManager -javaagent:/deployments/app/cryostat-agent.jar=[ThreadCount>0&&TargetDuration>duration(\"2m\")]~Profiling" \
         --env QUARKUS_HTTP_PORT=10011 \
         --env ORG_ACME_CRYOSTATSERVICE_ENABLED="false" \
         --env CRYOSTAT_AGENT_APP_NAME="quarkus-test-agent-2" \
@@ -234,6 +236,8 @@ runDemoApps() {
         --env CRYOSTAT_AGENT_TRUST_ALL="true" \
         --env CRYOSTAT_AGENT_AUTHORIZATION="Basic $(echo user:pass | base64)" \
         --env CRYOSTAT_AGENT_API_WRITES_ENABLED="true" \
+        --env CRYOSTAT_AGENT_HARVESTER_TEMPLATE="default" \
+        --env CRYOSTAT_AGENT_SMART_TRIGGER_EVALUATION_PERIOD_MS=10000 \
         --rm -d quay.io/andrewazores/quarkus-test:latest
 
     # copy a jboss-client.jar into /clientlib first