Do not retry /run on action containers

It should be assumed that /run only happens after /init which should itself ensure that the container is running and ready. With that in mind, it does not make sense to attempt to retry posting to the /run endpoint on connection failures. Such a failure is an indication that something catastrophic has happened to the container, and no attempt at recovery should be made.

This is accomplished by adding a "retry" flag to the appropriate HTTP utilities to control whether or not a retry should be attempted.

tests/src/whisk/core/container/test/ContainerConnectionTests.scala

@@ -93,7 +93,7 @@ class ContainerConnectionTests
         val connection = new HttpUtils(hostWithPort, timeout, 1.B)
         testHang = timeout * 2
         val start = Instant.now()
-        val result = connection.post("/init", JsObject())
+        val result = connection.post("/init", JsObject(), retry=true)
         val end = Instant.now()
         val waited = end.toEpochMilli - start.toEpochMilli
         result.isLeft shouldBe true
@@ -108,7 +108,7 @@ class ContainerConnectionTests
             Seq(null, "", "abc", """{"a":"B"}""", """["a", "b"]""").foreach { r =>
                 testStatusOK = code
                 testResponse = r
-                val result = connection.post("/init", JsObject())
+                val result = connection.post("/init", JsObject(), retry=true)
                 result shouldBe Right {
                     ContainerResponse(okStatus = testStatusOK, if (r != null) r else "", None)
                 }
@@ -125,7 +125,7 @@ class ContainerConnectionTests
             Seq("abc", """{"a":"B"}""", """["a", "b"]""").foreach { r =>
                 testStatusOK = code
                 testResponse = r
-                val result = connection.post("/init", JsObject())
+                val result = connection.post("/init", JsObject(), retry=true)
                 result shouldBe Right {
                     ContainerResponse(okStatus = testStatusOK, r.take(limit.toBytes.toInt), Some((r.length.B, limit)))
                 }