Fix Android emulator timeout and restart on COIN

Changed device's start timeout to 3 minutes,
and restarting retries to 3.

Changed emulator boot check loop to check against
real time value instead int value.
Some of the tests caused previous
for-loop to take more than 1 second.

Task-number: COIN-1154
Pick-to: 6.5 5.15
Change-Id: I58066ad8f440b2fdee3c5b64d094b2713007bf19
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>
Reviewed-by: Jukka Jokiniva <jukka.jokiniva@qt.io>
(cherry picked from commit 14c7c3061b)
Reviewed-by: Jani Korteniemi <jani.korteniemi@qt.io>

coin/provisioning/common/linux/android_emulator_launcher.sh

@@ -7,8 +7,8 @@
 
 set -e
 
-EMULATOR_MAX_RETRIES=5
-ADB_MAX_TIMEOUT=300
+EMULATOR_MAX_RETRIES=3
+ADB_MAX_TIMEOUT=180
 EMULATOR_EXEC="$ANDROID_SDK_ROOT/emulator/emulator"
 ADB_EXEC="$ANDROID_SDK_ROOT/platform-tools/adb"
 LOGCAT_PATH="$COIN_CTEST_RESULTSDIR/emulator_logcat_%iter.txt"
@@ -85,7 +85,11 @@ do
 
     echo "Waiting a few minutes for the emulator to fully boot..."
     emulator_status=down
-    for _ in $(seq ${ADB_MAX_TIMEOUT})
+
+    time_start=${SECONDS}
+    duration=0
+
+    while [ $duration -lt ${ADB_MAX_TIMEOUT} ]
     do
         sleep 1
 
@@ -94,6 +98,7 @@ do
             emulator_status=up
             break
         fi
+        duration=$(( SECONDS - time_start ))
     done
 
     # If emulator status is still offline after timeout period,