Fix failing docker packaging tests due to too long commandline (elastic#125053)

* Increate COLUMN for detecting running elasticsearch instance
* Unmute DockerTest test

(cherry picked from commit 38f2439)

# Conflicts:
#	muted-tests.yml

Author: breskeby

muted-tests.yml

@@ -396,8 +396,6 @@ tests:
 - class: org.elasticsearch.xpack.test.rest.XPackRestIT
   method: test {p0=snapshot/20_operator_privileges_disabled/Operator only settings can be set and restored by non-operator user when operator privileges is disabled}
   issue: https://github.com/elastic/elasticsearch/issues/120973
-- class: org.elasticsearch.packaging.test.DockerTests
-  issue: https://github.com/elastic/elasticsearch/issues/120978
 - class: org.elasticsearch.xpack.security.authc.service.ServiceAccountIT
   method: testAuthenticateShouldNotFallThroughInCaseOfFailure
   issue: https://github.com/elastic/elasticsearch/issues/120902
@@ -475,4 +473,4 @@ tests:
   issue: https://github.com/elastic/elasticsearch/issues/120148
 - class: org.elasticsearch.index.mapper.ShapeGeometryFieldMapperTests
   method: testCartesianBoundsBlockLoader
-  issue: https://github.com/elastic/elasticsearch/issues/125129
+  issue: https://github.com/elastic/elasticsearch/issues/125129

qa/packaging/src/test/java/org/elasticsearch/packaging/util/docker/Docker.java

@@ -187,7 +187,7 @@ public static void waitForElasticsearchToStart() {
                 Thread.sleep(STARTUP_SLEEP_INTERVAL_MILLISECONDS);
 
                 // Set COLUMNS so that `ps` doesn't truncate its output
-                psOutput = dockerShell.run("bash -c 'COLUMNS=3000 ps ax'").stdout();
+                psOutput = dockerShell.run("bash -c 'COLUMNS=4000 ps ax'").stdout();
 
                 if (psOutput.contains("org.elasticsearch.bootstrap.Elasticsearch")) {
                     isElasticsearchRunning = true;