test: use pgrep command

integration-test/script/jboss_pid.sh

@@ -1,2 +1,2 @@
 #!/bin/bash
-ps -ef | grep -E 'Main|jboss-modules.jar' | grep -v grep | awk '{print $2}' | tr -d '\n'
+pgrep -f 'Main|jboss-modules.jar' | tr -d '\n'

integration-test/script/jetty_pid.sh

@@ -1,2 +1,2 @@
 #!/bin/bash
-ps -ef | grep "jetty.home" | grep -v grep | awk '{print $2}' | tr -d '\n'
+pgrep -f "jetty.home" | tr -d '\n'

integration-test/script/resin_pid.sh

@@ -1,2 +1,2 @@
 #!/bin/bash
-ps -ef | grep Resin | grep -v grep | awk '{print $2}' | tr -d '\n'
+pgrep -f Resin | tr -d '\n'

integration-test/script/tomcat_pid.sh

@@ -1,2 +1,2 @@
 #!/bin/bash
-ps -ef | grep Bootstrap | grep -v grep | awk '{print $2}' | tr -d '\n'
+pgrep -f Bootstrap | tr -d '\n'

integration-test/script/weblogic_pid.sh

@@ -2,7 +2,7 @@
 pid=""
 
 if command -v ps &> /dev/null; then
-    pid=$(ps -ef | grep weblogic | grep -v grep | awk '{print $2}')
+    pid=$(pgrep -f weblogic)
 fi
 
 if [ -z "$pid" ]; then

integration-test/script/websphere_pid.sh

@@ -1,2 +1,2 @@
 #!/bin/bash
-ps -ef | grep WSLauncher | grep -v grep | awk '{print $2}' | tr -d '\n'
+pgrep -f WSLauncher | tr -d '\n'